6565.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-32G6 + B-32MZ + B-222Z + B-2047 + B-2077 + B-2094 + B-2485 + HL8704 + N748AM + 9V-SMZ + flight ACA8
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
RKSI - MMMX enroute parameters ...
The figures group after the destination is the running number
The first group is the latitude
The second group is the longitude
and its four last figures is the time in hours and minutes
The third group is the FL
AGM = Miscellaneous Air/Ground Message
CFD = Centralized Fault Data
DFB = Digital Flight Bag
ETP = Equitime Point
LID = Landing Information Delivery
PDC = Pre-Departure Clearance
• DELAY is a critical procedure, designed to prevent pilots
from acting on any old CPDLC messages
that might have been delayed in the network
The most serious of such cases would be
the pilot executing a clearance that was no longer valid
• The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint
• The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

6565.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-222Z + B-2077 + N574DZ + flight LAN602
ZSPD - KLAX and KLAX - ZSPD enroute parameters ...
The figures group after the destination is the running number
The first group is the latitude
The second group is the longitude
and its four last figures is the time in hours and minutes
The third group is the FL
ACM = Aircraft Condition Monitoring
CFB = Centralized Fault Book
DFB = Digital Flight Bag
EPC = Engine Power Check

9982.5 kHz KVM70 Honolulu Meteo, Hawaii
Pretty regular frequency jumps as usual ...
NCEP = National Centers for Environmental Prediction
NHC = National Hurricane Center
OPC = Ocean Prediction Center
WPC = Weather Prediction Center

13276.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft CC-CXG + N505DN + N507DN + N630UP + XA-VAM + XA-VSF + flight UAL893
PACD is an ETOPS emergency alternate airport
for trans-Pacific flights with RWY 15/33 = 3103 metres ...
DFB = Digital Flight Bag
FDE = Fault Detection and Exclusion
FMC = Flight Management Computer
FMS = Flight Management System
LAHSO = Land And Hold Short Operations
REIL = Runway End Identifier Light
TI2 = Terminal Information Request
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

13276.0 kHz H01 HFDL San Francisco Air CA, United States of America, + flight FDX75

518.0 kHz ZSD Durban Radio, South Africa (Republic of)
ZSJ has been ZAN for many years now ...
CNW = Coastal Navigational Warning
SAN = South African Navy

4209.5 kHz NRV United States Coast Guard Apra Harbour, Guam
ARSON and ICEBOX are weapons training areas ...
BNM = Broadcast Notice to Mariners
FMSG = Forces Micronesia Sector Guam
GU = Guam

12579.0 kHz NRV United States Coast Guard Apra Harbour, Guam
ITCZ = Inter-Tropical Convergence Zone

8912.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft B-2094 + CC-BDC + N783AM + N964AM + XA-VAM + XA-VRY + flight DAL189
L/R engine data SAEZ - MMMX ...
ADF = Automatic Direction Finder
AGM = Miscellaneous Air/Ground Message
BSM = Brake System Monitoring
CFB = Centralized Fault Book
CFD = Centralized Fault Data
CMCF = Central Maintenance Computing Function
DA = Departure Airport
DB = Dash Board
DFB = Digital Flight Bag
DM = Time Stamp
DMC = Display Management Computer
DS = Destination Airport
EFB = Electronic Flight Bag
EIS = Electronic Instrument System
FR = Fault Report, followed by the Date-Time Group
FRC = Fault Reporting Code
IC = Icing
NCMM = Network Channel Management Monitor
PACK = Pressurization Air Conditioning Kit
REQPWI = Predicted Wind Request for FL 330 310 and 360 340 320 300
WN = Warning Number, followed by the Date-Time Group
WW = Wheel Well

8912.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft B-2094 + CC-CXG + CN-RHA + CN-ROR + EC-MLT + EC-NIG + SU-GDC + flight UPS62
AGM = Miscellaneous Air/Ground Message
CFD = Centralized Fault Data
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
• The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy
• The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint
• The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-20AA + DQ-FJW + HL8576 + JA227P + flight ANA882
Code figures for NZAA runways braking action - see e.g. here
AGM = Miscellaneous Air/Ground Message
MAAS = Meet and Assist
RWYCC = Runway Condition Code
TI2 = Terminal Information Request
• DELAY is a critical procedure, designed to prevent pilots
from acting on any old CPDLC messages
that might have been delayed in the network
The most serious of such cases would be
the pilot executing a clearance that was no longer valid
• The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-223F + B-2094 + C-FRSA + F-HRBG + N528DN + N621UP + XA-ADH + flight ANA882
EHAM - ZSPD and MMMY - RKSI and LEMD - ZSPD enroute parameters ...
The figures group after the destination is the running number
The first group is the latitude
The second group is the longitude
and its four last figures is the time in hours and minutes
The third group is the FL
AIMS = Airplane Information Management System
CFB = Centralized Fault Book
DB = Dash Board
DCMF = Data Communication Management Function
TI2 = Terminal Information Request
• The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

518.0 kHz VRX Hong Kong Radio, China
Nice to see VRX uses intentionally
the internationally recognized British names
for those island groups in the South China Sea
and not those absurd fantasy names
applied by aggressive Communist China
that is going to grab every shoal all the way down
to the shores of Melayu dan Singapura -
more than 1,800 kilometres away from Hainan!
Alamak!! Tak boleh tahan lah!!!

518.0 kHz JNB Naha Radio, Okinawa Island, Japan
LL = Light List
Shima = Island

13276.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft A6-EXM + B-220F + C-FPQB + N582UP + N27964 + flight AFR338 + AFR374
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
ZSPD - CYVR and ZSPD - KLAX enroute parameters ...
The figures group after the destination is the running number
The first group is the latitude
The second group is the longitude
and its four last figures is the time in hours and minutes
The third group is the FL
AGM = Miscellaneous Air/Ground Message
DFB = Digital Flight Bag
DFD = Digital Flight Data
MCC = Maintenance Control Center
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

4209.5 kHz XVG Hai Phong Radio, Viet Nam

8912.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft C-GOQJ + CN-ROY + EC-MXV + G-VWAG + N782AM + N948AV + N966AV + flight FX1402
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
Crew name and personnel number list ...
LFPG - MMMX enroute parameters ...
The figures group after the destination is the running number
The first group is the latitude
The second group is the longitude
and its four last figures is the time in hours and minutes
The third group is the FL
CFB = Centralized Fault Book
DFB = Digital Flight Bag
DT = Destination
FLR = Failure
FN = Flight Number
FR = Fault Report, followed by the Date-Time Group
LIDO = Lufthansa Integrated Dispatch Operation =
FMS software used by 180+ airlines worldwide
PES = Passenger Entertainment System
SR = Seat Row
TS = Time Stamp
• The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy
• PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

VAAC Washington ...

15025.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft B-326Y enroute EDDF - ZSPD
go2MONITOR's superb Result Viewer allows easy selection of MIAM
out of hundreds of decoded messages by means of advanced filter settings ...
go2MONITOR perfectly re-assembles and decodes MIAM CORE data ...
These are often messages in Airbus' XML format
CMS = Cabin Management System
MIAM = Media Independent Aircraft Message
MSN = Manufacturer's Serial Number
PDU = Pilot Display Unit
RTR = Real-Time Report
VTS = Vacuum Toilet Service

15025.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft B-20EP + B-32KF + EI-KIB + HZ-NS45 + flight CCA828 + MCH334
go2MONITOR's superb Result Viewer has a post processor feature
running after the signal was received, extracting sender
and receiver IDs, position data, and more
For ADS-B signals, the post processing was adapted
to extract airplane positions and their addresses sent
AA = Arrival Airport
DA = Departure Airport
EEP = ETOPS Entry Point
ETP = Equitime Point
FPN = Flight Plan Report downlink
SOC = Service Operations Centre

4209.5 kHz XSV Tianjin Radio, China
MSA = Maritime Safety Administration

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-MCF + B-6942 + B-58306 + DQ-FJU + flight ANA879 + GTI563
XML-formatted Airbus A330 arrival data uplink ...
AGM = Miscellaneous Air/Ground Message
LID = Landing Information Delivery
PDC = Pre-Departure Clearance

13351.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-5965 + B-6672 + HL7747 + JA206P + N501DN + N29991 + RPC8786 + VH-XQU + flight CPA198
AGM = Miscellaneous Air/Ground Message
DFD = Digital Flight Data
FPC = Flight Plan uplink by ATC
OCC = Operations Control Centre
RDP = Radar Data Processing
• The Altitude Range Change Event is triggered
when the aircraft's altitude exceeds the altitude ceiling
or floor defined in the contract by the ground system
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

518.0 kHz VAE Canadian Coast Guard Tofino BC, Canada
Amphitrite Point Lighthouse is 40 kilometres south of Tofino ...

7795.0 kHz JMH2 Tokyo Meteo, Japan

7795.0 kHz JMH2 Tokyo Meteo, Japan

518.0 kHz UFL Vladivostok Radio SE, Russian Federation
Zaliv = Bay
Zaliv Petra Velikogo = Peter the Great Gulf

8582.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

10027.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft JA203P + JA808A + N516DN + XA-ADC + XA-ADL + 9V-SJE + flight CES240
MMMX - SBGR and MMMY - RJAA cruise data ...
The figures group after the destination is the running number
The first group is the latitude
The second group is the longitude
and its four last figures is the time in hours and minutes
The third group is the FL
AGM = Miscellaneous Air/Ground Message
CS = Crew Sign
DFB = Digital Flight Bag
IAO = In and Out of Clouds
LGTM = Light Minus Turbulence = relatively weaker intensity
LGTP = Light Plus Turbulence = relatively greater intensity
OCC = Operations Control Centre
SB = Seat Belt
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

10027.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft HL7793 + HL8282 + JA12VA + JA827P + N510DN + N522DZ + N531DN + flight PR0209
AGM = Miscellaneous Air/Ground Message
BMC = Bleed Monitoring Computer
CFB = Centralized Fault Book
DFD = Digital Flight Data
EDR = Eddy Dissipation Rate
FDP = Flight Duty Period
FLR = Failure
FMC = Flight Management Computer
FMS = Flight Management System
FR = Fault Report, followed by the Date-Time Group
HP = High-Pressure
ITA = IATA Turbulence Aware Platform
OCC = Operations Control Center
SOL = Solenoid

518.0 kHz Veraval Radio, India
IFB = Indian Fishing Boat
INW = Indian Navigational Warning

518.0 kHz RFA Astrakhan Radio, Russian Federation

518.0 kHz A9M Hamala Radio, Bahrain
AIS = Automatic Identification System
BA = British Admiralty
DB = Derrick Barge = Offshore crane vessel for heavy lifting tasks
MENAS = Middle East Navigation Aids Service
MEGULITE = Middle East Gulf Lighting Service

17928.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft A6-EVP + A6-EXH + A7-ANI + B-6549 + CN-RGC + CN-ROA + CN-ROL + CN-ROY + SU-GCF + flight FV6413
AGM = Miscellaneous Air/Ground Message
CCO = Operations Control Centre
CDB = Commandant Du Bord
CFB = Centralized Fault Book
FLR = Failure
FMS = Flight Management System
FPN = Flight Plan Report downlink
FR = Fault Report, followed by the Date-Time Group
IR = Inertial Reference
MMR = Multi-Mode Receiver
RESREQ/AK = FMS downlink acknowledgement of a REQFPN uplink
• The TP4 (= Transport Protocol Class 4) message
notifies the pilot of an ATSU identifier
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

15025.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft B-2094 + CN-RHA + JY-BAA + VN-A893 + 7T-VJA + flight LH0642
AGM = Miscellaneous Air/Ground Message
CDP = Computer Diagnostics Program
CFD = Centralized Fault Data
DFD = Digital Flight Data
EDP = Engine Display Panel
DT = Destination
FN = Flight Number
FWS = Flight Warning System
HPP = High Pressure Pump
TLSOP = Airbus enroute report directly to Toulouse in France
TS = Time Stamp
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
• PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

5100.0 kHz VMC Charleville Meteo QLD, Australia
GAM = Generalized Additive Model

5100.0 kHz VMC Charleville Meteo QLD, Australia
MSLP = Mean Sea Level Pressure

5100.0 kHz VMC Charleville Meteo QLD, Australia

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-MBP + B-30C3 + B-302T + B-329C + B-6753 + JA206P + 9V-SCG + 9V-SCW + 9V-SHM + flight ANA224
AGM = Miscellaneous Air/Ground Message
LGTM = Light Minus Turbulence = relatively weaker intensity
LGTP = Light Plus Turbulence = relatively greater intensity
LID = Landing Information Delivery
OCC = Operations Control Centre
PDC = Pre-Departure Clearance
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

17919.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft N895FD + XA-LRL + XA-VRY + XA-VVB + XA-VVC + flight AC0930
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
AA = Arrival Airport
AP = Approach type and runway number
DA = Departure Airport
DT = Destination, followed by estimated runway for landing
GOCC = Global Operations Control Center
REQPWI = Predicted Wind Request for FL 380
TS = Time Stamp
• The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

17919.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft B-223F + HP1525 + N527DN + N854GT + XA-VVB + flight DAL40
PACD is an ETOPS emergency alternate airport
for trans-Pacific flights with RWY 15/33 = 3103 metres ...
PASY is an ETOPS emergency alternate airport in the Alaskan Aleutian Islands
for trans-Pacific flights ... RWY 10/28 is 3049 metres long
AOC = Airline Operations Control
SITA = Societe Internationale de Telecommunication Aeronautique

15025.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft EI-KGB + EI-KIB + flight SVA104 + UAE19
go2MONITOR's superb Result Viewer has a post processor feature
running after the signal was received, extracting sender
and receiver IDs, position data, and more
For ADS-B signals, the post processing was adapted
to extract airplane positions and their addresses sent
CFB = Centralized Fault Book
DFB = Digital Flight Bag
EIU = Engine Interface Unit
FADEC = Full Authority Digital Engine Control
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
IR = Inertial Reference
MMR = Multi-Mode Receiver
WN = Warning Number, followed by the Date-Time Group
• Cruise Performance Report UACC - UATE ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
Note that in this message, however, the text is not table-formatted;
anyway, standard row identifiers such as CC C0 C1 CE ... can be easily identified after the slash ...

18026.7 kHz Ministry of Foreign Affairs Cairo, Egypt

8936.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-LPU + B-MCB + B-32MK + B-223F + HL7794 + HL8293 + JA901P + LV-KHU + N857FD + flight UPS56
Code figures for VHHH runways braking action - see e.g. here
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
ZSPD - KSEA enroute parameters ...
The figures group after the destination is the running number
The first group is the latitude
The second group is the longitude
and its four last figures is the time in hours and minutes
The third group is the FL
AGM = Miscellaneous Air/Ground Message
DT = Destination
EDR = Eddy Dissipation Rate
FN = Flight Number
IOCC = International Operations Control Center
ITA = IATA Turbulence Aware Platform
TI2 = Terminal Information Request
• PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

16826.3 kHz XSQ Guangzhou Radio, China
CMA = China Meteorological Administration
MSA = Maritime Safety Administration

8948.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft A6-EVQ + CN-RHA + CN-ROP + XA-DHN + flight 8U0492
MMMX - LEBL cruise data ...
The figures group after the destination is the running number
The first group is the latitude
The second group is the longitude
and its four last figures is the time in hours and minutes
The third group is the FL
AGM = Miscellaneous Air/Ground Message
CCO = Operations Control Centre
DFB = Digital Flight Bag
• The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

17919.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft N573DZ + TC-LBD + flight KQA002 + SIA34
go2MONITOR's superb Result Viewer has a post processor feature
running after the signal was received, extracting sender
and receiver IDs, position data, and more
For ADS-B signals, the post processing was adapted
to extract airplane positions and their addresses sent
AGM = Miscellaneous Air/Ground Message
AIB = Airbus Industry
CCOM = Cabin Crew Operating Manual
CFB = Centralized Fault Book
FAP = Flight Attendant Panel
IFE = In-Flight Entertainment
MP = Maintenance Procedure
SPDB = Secondary Power Distribution Box
WN = Warning Number, followed by the Date-Time Group

518.0 kHz SUZ Serapeum Radio, Egypt
ADES = Advanced Energy Systems
ADMARINE = Jackup Rig operated by ADES
BA = British Admiralty
EAMS = Egyptian Authority for Maritime Safety
This is the former PLA (Ports and Lighthouses Administration) ...
NM = Notice to Mariners

518.0 kHz Vakalpudi Radio, India
INW = Indian Navigational Warning

7646.0 kHz DDH7 Hamburg Meteo, Germany
BBXX AAXX = SHIP SYNOP
= WMO code form for a report of surface observation
DWD = Deutscher Wetterdienst

21955.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft G-VSRB + PR-TYI + PR-YYF + SU-GEL + 7T-VJF + flight UAE262
AA = Arrival Airport
AGM = Miscellaneous Air/Ground Message
AP = Approach type and runway number
BJR = Bonjour
CCO = Operations Control Centre
CDB = Commandant Du Bord
DA = Departure Airport
FPN = Flight Plan Report downlink
REQPWI = Predicted Wind Request for FL 410 390 360 340

8582.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

518.0 kHz ZSQ Port Elizabeth Radio, South Africa (Republic of)
Warnings still in force - received 011720Z APR 2026
ZSJ has been ZAN for many years now ...
CNW = Coastal Navigational Warning
SAN = South African Navy

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft B-32G2 + ET-ATR + F-HTYK + F-HUVK + HL7616 + N519DN + flight VIR23X
CFB = Centralized Fault Book
CSC = Chief Standards Captain
LCP = Line Check Pilot
MIAM = Media Independent Aircraft Message
PDU = Pilot Display Unit
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
• The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

4210.5 (not 4209.5!) kHz XSQ Guangzhou Radio, China
DGNSS = Differential Global Navigation Satellite System
RBN = Radio Beacon
What those megalomaniac Communist Chinese call "Zengmu Ansha Reef"
is in fact James Shoal, recognized by the Brits in the early 19th Century
and listed on the British Admiralty Chart in the 1870s (!).
Needless to say, located a mere 83 kilometres off Bintulu in Sarawak,
BETING SERUPAI belongs perfectly to the continental shelf and EEZ of MALAYSIA,
and has never repeat NEVER been a territory of Communist "China"
that is more than 1,800 kilometres repeat
MORE THAN ONE THOUSAND EIGHT HUNDRED KILOMETRES away!
Alamak!! Tak boleh tahan lah!!!

8948.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft F-HUVC + HL7625 + N626UP + XA-AMR + flight VIR301
CFB = Centralized Fault Book
DB = Dash Board
LS = Landing System
PACK = Pressurization Air Conditioning Kit
WELS = Wireless Emergency Lighting System
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
• The TP4 (= Transport Protocol Class 4) message
notifies the pilot of an ATSU identifier
• The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

15025.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft A6-APG + CN-ROL + ET-BCE + HB-IHC + HS-XTS + N129FE + RA73097 + RA73738 + flight SU0423
LFPG 27R runway length and landing data ...
TLSFW = Airbus enroute report directly to Toulouse in France
AGM = Miscellaneous Air/Ground Message
CCO = Operations Control Centre
DFD = Digital Flight Data
DT = Destination
FN = Flight Number
IGV = Inlet Guide Vane
TI2 = Terminal Information Request
• Cruise Performance Report UUEE - URMT ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
• PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

15025.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft CN-RHD + ET-BCE + flight FDX92 + UAE89Y
go2MONITOR's superb Result Viewer has a post processor feature
running after the signal was received, extracting sender
and receiver IDs, position data, and more
For ADS-B signals, the post processing was adapted
to extract airplane positions and their addresses sent
AGM = Miscellaneous Air/Ground Message
CCO = Operations Control Centre
TI2 = Terminal Information Request

518.0 kHz XVT Da Nang Radio, Viet Nam

518.0 kHz XVS Ho Chi Minh City Radio, Viet Nam
Totally outdated navigational warnings of several years ago ...
Alamak! Tak boleh tahan lah!

10030.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft ET-BCD enroute ZSPD - HAAB
go2MONITOR's superb Result Viewer allows easy selection of MIAM
out of hundreds of decoded messages by means of advanced filter settings ...
go2MONITOR perfectly re-assembles and decodes MIAM CORE data ...
These are often messages in Airbus' XML format
MIAM = Media Independent Aircraft Message
PDU = Pilot Display Unit

10030.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft ET-AUP + F-HUVQ + UK32021 + 7O-AFH + flight AAR542
ADIRU = Air Data Inertial Reference Unit
CFB = Centralized Fault Book
FLR = Failure
FMC = Flight Management Computer
FR = Fault Report, followed by the Date-Time Group
GPSSU = Global Positioning System Sensor Unit
IR = Inertial Reference
MMR = Multi-Mode Receiver
REQPWI = Predicted Wind Request for FL 380 360 340 320
WN = Warning Number, followed by the Date-Time Group
• The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy
• The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-MCD + B-32G6 + B-221S + EI-KBI + N531DN + N898CA + flight ces298
Solar cycle maximum - and the ionosphere going crazy:
POSRPT downlink from a UACC - UAAA Central Asian one-hour hop ... via Guam!
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-1381 + HL7624 + HL8714 + N405KZ + flight CES786
ZHCC 12R/30L runway length and landing data ...
CFD = Centralized Fault Data
DT = Destination
FN = Flight Number
MDPWI = Meteorological Data - Predicted Wind for FL 341 381 ?!
MRLW = Maximum Regular Landing Weight
TDZ = Touchdown Zone
TI2 = Terminal Information Request
TS = Time Stamp
• PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

4210.5 kHz XSQ Guangzhou Radio, China
Presumably local time used here since received at 1520 UTC ...

8431.0 kHz XSQ Guangzhou Radio, China
Characters in brackets denote the Latin alphabet
The four-figure groups without brackets
are Chinese ideographs
N/W = Navigational Warning
Presumably local time used here since received at 1400 UTC ...

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-2094 + B-5908 + B-7882 + EC-NIG + HP1525 + N505DN + flight CPA139 + THY169
MA is a MIAM
go2MONITOR's superb Result Viewer allows easy selection of MIAM
out of hundreds of decoded messages by means of advanced filter settings ...
go2MONITOR perfectly re-assembles and decodes MIAM CORE data ...
These are often messages in Airbus' XML format
go2MONITOR's superb Result Viewer has a post processor feature
running after the signal was received, extracting sender
and receiver IDs, position data, and more
For ADS-B signals, the post processing was adapted
to extract airplane positions and their addresses sent
NZAA - SAEZ cruise data ...
The figures group after the destination is the running number
The first group is the latitude
The second group is the longitude
and its four last figures is the time in hours and minutes
The third group is the FL
CFB = Centralized Fault Book
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
MIAM = Media Independent Aircraft Message
RNP = Required Navigation Performance
SITA = Societe Internationale de Telecommunication Aeronautique
TI2 = Terminal Information Request
VSC = Vacuum System Controller
• The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

518.0 kHz 9AS Split Radio, Croatia

518.0 kHz PBK Netherlands Coast Guard Ijmuiden, Netherlands
TSS = Traffic Separation Scheme

8936.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-305X + B-2094 + HL8702 + N574DZ + N899FD + N29991 + XA-VRX + 9V-SMZ + flight UAL153
PASY is an ETOPS emergency alternate airport in the Alaskan Aleutian Islands
for trans-Pacific flights ... RWY 10/28 is 3049 metres long
AGM = Miscellaneous Air/Ground Message
CI = Consistency Index
LID = Landing Information Delivery
PDC = Pre-Departure Clearance
TI2 = Terminal Information Request
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

8936.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-2094 + flight UPS603
Riding on the North Pacific Jet Stream towards KLAX
at 530 knots = 982 kilometres per hour ...
AGM = Miscellaneous Air/Ground Message
CFD = Centralized Fault Data
ECS = Environmental Control System
• The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy
• The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

8416.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

13303.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft SE-DMS + TU-TRF + UK78703 + 5A-ONJ + flight KF0378
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
DT = Destination
FDIU =Flight Data Interface Unit
FLR = Failure
FN = Flight Number
FR = Fault Report, followed by the Date-Time Group
QAR = Quick Access Recording
• Cruise Performance Report DIAP - DFFD ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
Note that in this message, however, the text is not table-formatted;
anyway, standard row identifiers such as CC C0 C1 CE ... can be easily identified after the slash ...
• PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft EC-OCG + F-HTYJ + N344KD + N860FD + flight UAE5RQ + VIR23X
• The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

8948.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft EC-NIG enroute SEQM - LEMD
go2MONITOR's superb Result Viewer allows easy selection of MIAM
out of hundreds of decoded messages by means of advanced filter settings ...
go2MONITOR perfectly re-assembles and decodes MIAM CORE data ...
These are often messages in Airbus' XML format
Parameters ...
MIAM = Media Independent Aircraft Message
PDU = Pilot Display Unit

8948.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft A6-EOI + CN-ROA + CS-TSI + F-HUVT + flight AVA182 + EVE805
go2MONITOR's superb Result Viewer has a post processor feature
running after the signal was received, extracting sender
and receiver IDs, position data, and more
For ADS-B signals, the post processing was adapted
to extract airplane positions and their addresses sent
AGM = Miscellaneous Air/Ground Message
CCO = Operations Control Centre
• DELAY is a critical procedure, designed to prevent pilots
from acting on any old CPDLC messages
that might have been delayed in the network
The most serious of such cases would be
the pilot executing a clearance that was no longer valid
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

16907.5 kHz JFA Funabashi Fisheries Radio, Japan
The date reads 8 3 28 = 2026 March 28
since the traditional Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

21997.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft PR-TYP + PR-TYR + flight LAN643 + LAN842
go2MONITOR's superb Result Viewer has a post processor feature
running after the signal was received, extracting sender
and receiver IDs, position data, and more
For ADS-B signals, the post processing was adapted
to extract airplane positions and their addresses sent
RS message seems to be some approach data downlink
(heading towards SBNF)
or some non-standard ULD cargo configuration ...
DFB = Digital Flight Bag
• Cruise Performance Report SBGR - SBGO ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
Note that in this message, however, the text is not table-formatted;
anyway, standard row identifiers such as CC C0 C1 CE ... can be easily identified after the slash ...

4209.5 kHz XVG Hai Phong Radio, Viet Nam

4209.5 kHz XSQ Guangzhou Radio, China
MSA = Maritime Safety Administration

490.0 kHz GPK Portpatrick Radio, United Kingdom

8416.5 kHz UAT Moscow Radio, Russian Federation

8416.5 kHz LGS Svalbard Radio, Spitsbergen, Norway

13351.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-LXI + B-2077 + B-5908 + B-58301 + B-58304 + HL8704 + N525DN + N583UP + PK-GFU + 9V-SKP + flight CES791
XML-formatted Airbus A330 arrival data uplink ...
CFD = Centralized Fault Data
CMT = Cabin Management Terminal
DFB = Digital Flight Bag
ECS = Environmental Control System
FO = First Officer
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
• Cruise Performance Report ZSHC - NZAA ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...

13351.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-325H + CC-BBB + HL8282 + HS-TEX + JA214A + PK-GFU + flight CES791
Perfect OOOI ...
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

13324.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-6012 + JA214A + JA823P + JA828P + JA901P + JA981A + JA983A + flight SIA23
AGM = Miscellaneous Air/Ground Message
DT = Destination
FN = Flight Number
FUKSTC = Fukushima Station Control
LGTP = Light Plus Turbulence = relatively greater intensity
LM = Light Minus Turbulence = relatively weaker intensity
OCC = Operations Control Centre
OTP = On Top
PBB = Passenger Boarding Bridge
REQPRG = Request Flight Progress Report
SR = Sunrise
SS = Sunset
VDGS = Visual Docking Guidance System
W/C = Wind Component

8948.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft CN-RHB + CN-RHC + PR-TYI + 7T-VJA + flight FDX518 + QTR3J
go2MONITOR's superb Result Viewer has a post processor feature
running after the signal was received, extracting sender
and receiver IDs, position data, and more
For ADS-B signals, the post processing was adapted
to extract airplane positions and their addresses sent
AGM = Miscellaneous Air/Ground Message
BCP = Beaucoup
CCO = Operations Control Centre
DT = Destination
FN = Flight Number
TS = Time Stamp
• PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

12750.0 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction

12750.0 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction
OPC = Ocean Prediction Center

12750.0 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction

13351.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-1639 + B-6323 + LV-KHU + N954AV + N963AV + UK32021 + VT-ANQ + flight AIC301
Solar cycle maximum - and the ionosphere going crazy:
Wind request downlink from a Northern Europe - Central Asian flight ... via Auckland!
SEQM - SAEZ flight parameters ...
DT = Destination
FN = Flight Number
REQPWI = Predicted Wind Request for FL 370 350 330
• Cruise Performance Report SAEZ - MDPC ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
• PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

8939.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-LXI + B-32AQ + B-32LV + B-325T + B-1639 + JA216P9 + N623UP + 9V-SHJ + flight DAL389
AGM = Miscellaneous Air/Ground Message
DFB = Digital Flight Bag
TI2 = Terminal Information Request
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

518.0 kHz GCC Cullercoats Radio, United Kingdom

4209.5 kHz NRV United States Coast Guard Apra Harbour, Guam
Warnings still in force - received 211530Z MAR 2026
BNM = Broadcast Notice to Mariners
FMSG = Forces Micronesia Sector Guam
GU = Guam
LT = Light

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-223A + B-5970 + B-8495 + CC-BMA + CC-CXF + XA-DHM + 9V-SHJ + flight UAL153
KORD - ZSPD and MMMX - SBGR enroute parameters ...
The figures group after the destination is the running number
The first group is the latitude
The second group is the longitude
and its four last figures is the time in hours and minutes
The third group is the FL
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
ETP = Equitime Point
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
LID = Landing Information Delivery
OFP = Operational Flight Plan
PDC = Pre-Departure Clearance
PIC = Pilot In Command
VSC = Vacuum System Controller

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft N528DN + PK-BLD + PK-GNN + flight CSN344
BURN + ALTN + 10 PCT + RESV = MIN + CONT/DLA = EST
CI = Consistency Index
ETE = Estimated Time Elapsed
ETP = Equitime Point
FMS = Flight Management System
MEL = Minimum Equipment List
PFL = Planned Flight Level
PFR = Planned Fuel Remaining
RDA = Route Data Assessment
RDC = Route Data Calculation
TP = Turbulence Plot, followed by the region (e.g. HI) and running number

518.0 kHz NMQ United States Coast Guard Long Beach CA, United States of America
BNM = Broadcast Notice to Mariners
LA = Los Angeles
LB = Long Beach
PZZ = AK CA OR WA
SFB = Space Force Base

5100.0 kHz VMC Charleville Meteo QLD, Australia

17919.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft B-227K + EC-NCK + HP1525 + JA12KZ + VN-A890 + 9V-SCO + 9V-SCW + flight LRC640
L/R engine data ZGSZ - KLAX ...
ZGSZ - KLAX enroute parameters ...
The figures group after the destination is the running number
The first group is the latitude
The second group is the longitude
and its four last figures is the time in hours and minutes
The third group is the FL
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
ACM = Aircraft Condition Monitoring
DFB = Digital Flight Bag
ETP = Equitime Point
SITA = Societe Internationale de Telecommunication Aeronautique
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
• The TP4 (= Transport Protocol Class 4) message
notifies the pilot of an ATSU identifier
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

16806.5 kHz NMF United States Coast Guard Boston MA, United States of America
NGA = National Geospatial-Intelligence Agency

16806.5 kHz NMF United States Coast Guard Boston MA, United States of America

13074.0 kHz JFC Misaki Fisheries Radio, Japan
The date reads 8 3 17 = 2026 March 17
since the traditional Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

13074.0 kHz JFC Misaki Fisheries Radio, Japan
JAFIC = Japan Fisheries Information Service Center
The date reads 8 3 17 = 2026 March 17
since the traditional Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-226V + B-307C + B-6113 + B-18919 + UK32112 + 9M-XBE + flight CES638
KORD - ZSPD enroute parameters ...
The figures group after the destination is the running number
The first group is the latitude
The second group is the longitude
and its four last figures is the time in hours and minutes
The third group is the FL
AGM = Miscellaneous Air/Ground Message
AI = Arrival Information
AOC = Airline Operations Control
CFB = Centralized Fault Book
DI = Departure Information
GC = Ground Connections
TDZ = Touchdown Zone
TI2 = Terminal Information Request
WN = Warning Number, followed by the Date-Time Group

21931.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft A6-EOT + F-HUVC + HC-CSF + OH-LWN + YR-KID + 9V-SGC + 9V-SGE + flight AVR481
DFB = Digital Flight Bag
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
• DELAY is a critical procedure, designed to prevent pilots
from acting on any old CPDLC messages
that might have been delayed in the network
The most serious of such cases would be
the pilot executing a clearance that was no longer valid
• Cruise Performance Report SEQM - SKBO ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
Note that in this message, however, the text is not table-formatted;
anyway, standard row identifiers such as CC C0 C1 CE ... can be easily identified after the slash ...
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

518.0 kHz NMN United States Coast Guard Norfolk VA, United States of America
BNM = Broadcast Notice to Mariners
CGD = Coast Guard District
HAZOPS = Hazardous Operations
VCOA = Virginia Capes Operating Area

6661.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft A6-EOT + EC-NIG + N965AM + flight CM0473
L/R engine data MMMX - EGLL ...
BSM = Brake System Monitoring
DFB = Digital Flight Bag
TDZ = Touchdown Zone
TI2 = Terminal Information Request
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

10060.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-MBS + B-32AW + B-220E + B-226V + flight CES288
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
ZSPD - KSEA cruise data ...
The figures group after the destination is the running number
The first group is the latitude
The second group is the longitude
and its four last figures is the time in hours and minutes
The third group is the FL
TI2 = Terminal Information Request
• Cruise Performance Report WADD - ZUTF ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
Note that in this message, however, the text is not table-formatted;
anyway, standard row identifiers such as CC C0 C1 CE ... can be easily identified after the slash ...

11030.0 kHz VMC Charleville Meteo QLD, Australia

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft CN-ROZ + G-VGEM + flight AUA37 + THY3RU
AA = Arrival Airport
AGM = Miscellaneous Air/Ground Message
AP = Approach type and runway number
CCO = Operations Control Centre
DA = Departure Airport
FMS = Flight Management System
FPN = Flight Plan Report downlink
REQPWI = Predicted Wind Request for FL 390 360
RESPWI/AC = FMS downlink acceptance and insertion of PWI = Predicted Wind uplink data
RESREQ/AK = FMS downlink acknowledgement of a REQFPN uplink

518.0 kHz XSZ Dalian Radio, China
ATON = Aid to Navigation
BDMSS = Bei-Dou Message Service System
MSA = Maritime Safety Administration

16806.5 kHz NMF United States Coast Guard Boston MA, United States of America
NGA = National Geospatial-Intelligence Agency

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-30CZ + B-32DV + B-325R + B-1612 + B-6009 + JA820P + 9V-SJC + flight ANA592
AGM = Miscellaneous Air/Ground Message
OCCS = Operations Control Centre Singapore
PD = Profile Descent
TDZ = Touchdown Zone
TI2 = Terminal Information Request

15025.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft A6-EXF + B-220E + B-308F + C-FGDZ + F-HUVR + HZ-NS44 + OH-LWN + SU-GDX + flight CCA828
EGSS - ZSPD cruise data ...
The figures group after the destination is the running number
The first group is the latitude
The second group is the longitude
and its four last figures is the time in hours and minutes
The third group is the FL
CDP = Computer Diagnostics Program
CFB = Centralized Fault Book
CFD = Centralized Fault Data
DFD = Digital Flight Data
DXP = Dispatcher
EDP = Engine Display Panel
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
FWS = Flight Warning System
HW = Head Wind
IR = Inertial Reference
LDA = Landing Distance Available = treshold to treshold = TORA plus the treshold displacement
MMR = Multi-Mode Receiver
TLSOP = Airbus enroute report directly to Toulouse in France
TORA = Take Off Run Available
WTL = Weight and Balance Limitations
XW = Cross Wind
• The TP4 (= Transport Protocol Class 4) message
notifies the pilot of an ATSU identifier
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FMH = Facilities Message Header = Flight Number
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

5655.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft HS-XTR + 9V-SHR + 9V-SHV + 9V-SJC + 9V-SMQ + flight SIA944
OCCS = Operations Control Centre Singapore
TI2 = Terminal Information Request
• DELAY is a critical procedure, designed to prevent pilots
from acting on any old CPDLC messages
that might have been delayed in the network
The most serious of such cases would be
the pilot executing a clearance that was no longer valid
• The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

518.0 kHz Bjuroklubb Radio, Sweden

13276.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft G-VLDY + N625UP + N848FD + OH-LWP + XA-VVD + 021109A + flight FX0055
021109 is a Boeing C-17A Globemaster 3 enroute ETAR Ramstein Air Base - KCHS ...
A NOTAM decoder can be found e.g. here
CDSS = Cockpit Door Surveillance System
CDSU = Cockpit Door Surveillance Unit
CFB = Centralized Fault Book
DC = Date-Time Code
FICON = Field Conditions
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
LIDO = Lufthansa Integrated Dispatch Operation =
FMS software used by 180+ airlines worldwide
LLD = Large Lateral Deviation = 10 NM or more without ATC approval
TI2 = Terminal Information Request

13276.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft JA806A + JY-BAH + flight RJA263
Code figures for KORD runways braking action - see e.g. here
PASY is an ETOPS emergency alternate airport in the Alaskan Aleutian Islands
for trans-Pacific flights ... RWY 10/28 is 3049 metres long
AGM = Miscellaneous Air/Ground Message
EEP = ETOPS Entry Point
OMC = Operations Management Center
• RAIM = Receiver Autonomous Integrity Monitoring
A RAIM prediction ensures that available GNSS signals
meet the integrity for a given phase of flight

10030.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft ET-AYC + ET-BCD + SU-GCS + TC-LGJ + 5Y-CYB + 5Y-KZE + flight KZR131
EDTO = Extended Diversion Time Operations
EENT = End of Evening Nautical Twilight
ETP = Equitime Point
MDPWI = Meteorological Data - Predicted Wind for FL 360
• The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

10030.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft A6-EEB + A6-ETI + EZ-F429 + HZ-NS32 + HZ-NS43 + N608UP + SU-GCS + flight KZR131
L/R engine data HECA - OMAA ...
ACM = Aircraft Condition Monitoring
BSM = Brake System Monitoring
DFB = Digital Flight Bag
TI2 = Terminal Information Request

13988.5 kHz JMH4 Tokyo Meteo, Japan

13988.5 kHz JMH4 Tokyo Meteo, Japan

21928.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft A6-EUU + B-MBB + B-32F8 + B-7838 + VN-A868 + 4W-AAO + flight CES723
FTM = Free Text Message
LIDO = Lufthansa Integrated Dispatch Operation =
FMS software used by 180+ airlines worldwide
PD = Profile Descent
RNP = Required Navigation Performance
TI2 = Terminal Information Request
WSI = Weather Services International
WXR = Weather Request
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

518.0 kHz HSA Bangkok Radio, Thailand
005671000 is the station's MMSI (Maritime Mobile Service Identity) code

518.0 kHz 9VG Singapore Radio, Singapore
Ships piloting and routing ...
DFT = Draft
DWT = Dead Weight Tonnage
OFB = One Fathom Bank = Sandbank Shoal at N0305 E10040
1.8288 metres = 1 fathom = 2 yards = 6 feet = 18 hands = 72 inches ...
= 30 ears = 60 noses = 180 teeth (sorry, just joking ;-))
SPOCC = Singapore Port Operations Control Centre
TSS = Traffic Separation Scheme

518.0 kHz 9MG Georgetown Radio, Pinang Island, Malaysia
Warnings still in force - received 081920Z MAR 2026

518.0 kHz 9WW21 Miri Radio, Sarawak, Malaysia
First Category = Sungai Sarawak - Sungai Sadong - Sungai Lundu
Second Category = Sungai Batang Lupar
Third Category = Sungai Regang up to Brunei

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-20AA + B-1293 + EI-KDB + HS-XTP + HS-XTS + N853FD + RPC8393 + VT-TSH + flight CCA453 + SIA403
OWE + PLD = ZFW + TOF = TOW - BURN = LW
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
CI = Consistency Index
CIDS = Cabin Intercommunication Data System
ERA = En-Route Alternate
FLR = Failure
FOD = Flight Operations Dispatch
FR = Fault Report, followed by the Date-Time Group
OWE = Operating Weight Empty
PES = Passenger Entertainment System
PLD = Pay Load
WN = Warning Number, followed by the Date-Time Group
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
• The TP4 (= Transport Protocol Class 4) message
notifies the pilot of an ATSU identifier
• The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

19201.0 kHz RCV Commonwealth of Independent States Navy Sevastopol', Ukraine

4209.5 kHz XVN Nha Trang Radio, Viet Nam
VTS = Vessel Traffic Service

4209.5 kHz XVG Hai Phong Radio, Viet Nam

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-20D7 + B-227M + B-328Z + F-HUVU + HS-XTR + JA202P + N609UP + N854GT + 9V-SMH + flight OZ0748
ZGSZ - KLAX and ZSPD - KSEA enroute parameters ...
The figures group after the destination is the running number
The first group is the latitude
The second group is the longitude
and its four last figures is the time in hours and minutes
The third group is the FL
TI2 = Terminal Information Request

486.0 kHz XSG Shanghai Radio, China
Chinese teleprinter code after Latin alphabet header
AIZAIZAIZAIZ corresponds to NNNN
According to this NAVAREA 11 document, XSG uses indeed
transmitter identification character Q on both 518 and 486 kHz

21982.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft EI-KBE + EI-KIB + HZ-NS26 + HZ-NS36 + HZ-NS49 + HZ-NS78 + SU-GDX + SU-GEG + UK78704 + 5A-ONJ + 7T-VJV + flight HKC394
Code figures for UTTT runways braking action - see e.g. here
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
ETP = Equitime Point
MDPWI = Meteorological Data - Predicted Wind for FL 350 370 390
PIC = Pilot In Command
TI2 = Terminal Information Request
WN = Warning Number, followed by the Date-Time Group

10060.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-305X + B-6012 + B-8960 + N36962 + 9V-SGC + 9V-SGD + 40001A + flight CAL024
ASY488 is a Royal Australian Air Force flight PHNL - KDOV ...
probably a Boeing C-17 Globemaster 3 aircraft
LID = Landing Information Delivery
PDC = Pre-Departure Clearance
TI2 = Terminal Information Request
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCA = Facilities Contact Advisory
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
• The TP4 (= Transport Protocol Class 4) message
notifies the pilot of an ATSU identifier
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

16559.0 kHz XSG Shanghai Radio, China
CMA = China Meteorological Administration

17967.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft B-222J + B-308F + B-5901 + B-5942 + EI-KGF + EI-KID + HZ-NS25 + HZ-NS45 + HZ-NS74 + HZ-NS92 + RA73117 + SU-GEJ + flight SU0525
OPIS - OPKC cargo parameters ...
CFB = Centralized Fault Book
DT = Destination
FLR = Failure
FMS = Flight Management System
FN = Flight Number
FR = Fault Report, followed by the Date-Time Group
MMR = Multi-Mode Receiver
VSC = Vacuum System Controller
WN = Warning Number, followed by the Date-Time Group
• PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

518.0 kHz EQM Bushire Radio, Iran
ODAS = Ocean Data Acquisition System

518.0 kHz EQI Abbas Radio, Iran

518.0 kHz Kao-Hsiung Radio, Taiwan (Democratic Republic of China)
VTS = Vessel Traffic Service

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-324K + ET-ATR + HZ-NS52 + JA901P + N103FE + VN-A891 + VN-A899 + 9V-SGA + 9V-SJC + flight CES522
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

17967.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft B-32LA + EI-KGG + RA73099 + UK32104 + flight SIA21
ADIRU = Air Data Inertial Reference Unit
AOA = Angle of Attack
CFB = Centralized Fault Book
DAR = Data Access Recorder
DFB = Digital Flight Bag
FCNT = (DAR) Frame Counter
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
GLS = GBAS (Ground-Based Augmentation System) Landing System
GPSSU = Global Positioning System Sensor Unit
IR = Inertial Reference
ISFC = Indicated Specific Fuel Consumption
IVV = Inertial Vertical Speed
MMR = Multi-Mode Receiver
TCAS = Traffic Alert and Collision Avoidance System
WN = Warning Number, followed by the Date-Time Group

518.0 kHz Centre Regional Operationnel de Surveillance et de Sauvetage Corsen, France

518.0 kHz EJK Irish Coast Guard Valentia, Ireland
MRSC = Maritime Rescue Sub Centre

518.0 kHz HZH Jeddah Radio, Saudi Arabia
Warnings still in force - received 011710Z MAR 2026
Pretty outdated data ...

518.0 kHz TAL Antalya Radio, Turkey
N/W = Nautical Warning
R/V = Research Vessel

17967.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft B-321E + EI-KDF + JY-AYR + RA73126 + VN-A508 + ZS-SZC + flight CCA950
• The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

8977.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft ET-AOQ + HZ-NS75 + LY-JAM + RA73115 + flight RJA117
UWKD - HESH cruise parameters ...
AA = Arrival Airport
DA = Departure Airport
FPN = Flight Plan Report downlink

518.0 kHz TAN Izmir Radio, Turkey
Warnings still in force - received 281650Z FEB 2026
N/W = Nautical Warning
R/V = Research Vessel

518.0 kHz VCF Canadian Coast Guard Moisie QUE, Canada
OVR-OW = over open water

518.0 kHz NMR United States Coast Guard San Juan, Puerto Rico
BNM = Broadcast Notice to Mariners
CGD = Coast Guard District
CRS = Commercial Resupply Services

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-LRC enroute FAOR - VHHH + B-5959 + HS-XTH + flight CES716
go2MONITOR's superb Result Viewer allows easy selection of MIAM
out of hundreds of decoded messages by means of advanced filter settings ...
go2MONITOR perfectly re-assembles and decodes MIAM CORE data ...
These are often messages in Airbus' XML format
AGM = Miscellaneous Air/Ground Message
BMC = Bleed Monitoring Computer
CFB = Centralized Fault Book
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
HP = High-Pressure
MIAM = Media Independent Aircraft Message
PDU = Pilot Display Unit
WN = Warning Number, followed by the Date-Time Group
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-32ME + B-329A + B-1261 + HS-XTR + VN-A892 + flight SIA312 + THY165
go2MONITOR's superb Result Viewer has a post processor feature
running after the signal was received, extracting sender
and receiver IDs, position data, and more
For ADS-B signals, the post processing was adapted
to extract airplane positions and their addresses sent
CDP = Computer Diagnostics Program
DFD = Digital Flight Data
EDP = Engine Display Panel
FWS = Flight Warning System
LDA = Landing Distance Available = treshold to treshold = TORA plus the treshold displacement
TDZ = Touchdown Zone
TI2 = Terminal Information Request
TLSOP = Airbus enroute report directly to Toulouse in France
TORA = Take Off Run Available

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft A6-XWC + B-308X + B-1261 + JA803A + 9V-SDB + 9V-SMT + flight AIC238
HCC = Hub Control Center
PD = Profile Descent
TDZ = Touchdown Zone
TI2 = Terminal Information Request
• The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

518.0 kHz Cape Town Radio, South Africa (Republic of)
SAWS = South African Weather Service

490.0 kHz UWT Taganrog Radio, Russian Federation

533.0 (!) kHz Digital data station

486.0 kHz XSL Fuzhou Radio, China
Local time (e.g. 26 2048) used here since received (beyond schedule) at 1620 UTC ...
Chinese teleprinter code after Latin alphabet header
AIZAIZAIZAIZ corresponds to NNNN
According to this NAVAREA 11 document, XSL uses indeed
transmitter identification character O on both 518 and 486 kHz

13988.5 kHz JMH4 Tokyo Meteo, Japan

13988.5 kHz JMH4 Tokyo Meteo, Japan

16806.5 kHz NMC United States Coast Guard San Francisco CA, United States of America

8927.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft A6-DDC + B-209X + B-320N + B-6603 + HL8508 + JA228P + XA-VSF + 9V-SGD + flight UAE75T
RKSI - KSFO cruise data ...
The figures group after the destination is the running number
The first group is the latitude
The second group is the longitude
and its four last figures is the time in hours and minutes
The third group is the FL
AGM = Miscellaneous Air/Ground Message
DFB = Digital Flight Bag
OCC = Operations Control Centre
RCD = Request for Departure Clearance
TI2 = Terminal Information Request
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

9677.8 (!) kHz Digital data station

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-2085 + B-18651 + OH-LWM + RA73153 + 9H-MLX + 9M-MAG + 9V-SHE + flight HVN137
Riding on the North Pacific Jet Stream near the MYA - CHN border
at 571 knots = 1058 kilometres per hour ...
XML-formatted Airbus A350 enroute failure report
but the Russians don't have MIAM ...
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
AI = Arrival Information
CFB = Centralized Fault Book
CIDS = Cabin Intercommunication Data System
CMS = Cabin Management System
DFD = Digital Flight Data
DI = Departure Information
GC = Ground Connections
MIAM = Media Independent Aircraft Message
MSN = Manufacturer's Serial Number
RTR = Real-Time Report
• The TP4 (= Transport Protocol Class 4) message
notifies the pilot of an ATSU identifier
• The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

17919.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft B-2045 + flight PAC961
ACAS = Airborne Collision Avoidance System
AGM = Miscellaneous Air/Ground Message
ATFM = Air Traffic Flow Management
DOF = Date of Flight
EET = Estimated Elapsed Time
MAC... = Mean Aerodynamic Chord ...
M/C = Magnetic Course
T/C = True Course
T/H = True Heading
ZND = Zone Distance (between checkpoints)
ZNT = Zone Time (between checkpoints)

13276.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft B-325R + HL8258 + HP1842 + JA383A + PR-TYQ + RPC9934 + flight VOI173
AI = Arrival Information
DI = Departure Information
DFB = Digital Flight Bag
GC = Ground Connections
HCC = Hub Control Center
L/G = Landing Gear
REQFPN = FPL report request uplink
RNP = Required Navigation Performance
TI2 = Terminal Information Request
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

7880.0 kHz DDK3 Hamburg Meteo, Germany

7880.0 kHz DDK3 Hamburg Meteo, Germany
SMHI = Swedish Meteorological and Hydrological Institute

7880.0 kHz DDK3 Hamburg Meteo, Germany

11318.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft B-20C5 + CC-CXG + flight CES510 + TAM300
go2MONITOR's superb Result Viewer has a post processor feature
running after the signal was received, extracting sender
and receiver IDs, position data, and more
For ADS-B signals, the post processing was adapted
to extract airplane positions and their addresses sent
DAR = Data Access Recorder
DFB = Digital Flight Bag
DP = Differential Pressure
EGT = Exhaust Gas Temperature
FCNT = (DAR) Frame Counter
FF = Fuel Flow (for engines 1 + 2)
ISFC = Indicated Specific Fuel Consumption
OIP = Oil Pressure
OIT = Oil Temperature
VBV = Variable Bleed Valve
VSV = Vacuum Switching Valve

8113.5 kHz RMP Commonwealth of Independent States Navy Kaliningrad, Russian Federation

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft A6-LRI + B-6012 + JA878A + 9V-SKM + flight CES280
TI2 = Terminal Information Request
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

518.0 kHz Sandakan Radio, Sabah, Malaysia
Warnings still in force - received 221500Z FEB 2026
NTM = Notice to Mariners
OBN = Ocean Bottom Node
SNP = Siakap North-Petai

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-MBS + B-32C6 + B-32LV + B-18915 + JA901P + N511DN + N13954 + TC-MCM + VN-A896 + 9V-SHP + flight ANA950
The ADC number is a security clearance required for flights
operating through the ADIZs of BGD IND MYA NPL PAK
The overflight / landing permit is valid for 48 hours
YSSY - KLAX cruise data ...
The figures group after the destination is the running number
The first group is the latitude
The second group is the longitude
and its four last figures is the time in hours and minutes
The third group is the FL
ADC = Air Defence Clearance
ADIZ = Air Defence Identification Zone
CDP = Computer Diagnostics Program
CFB = Centralized Fault Book
DFB = Digital Flight Bag
DFD = Digital Flight Data
EDP = Engine Display Panel
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
FWS = Flight Warning System
LID = Landing Information Delivery
PDC = Pre-Departure Clearance
TP = Turbulence Plot, followed by the region (e.g. HI) and running number
TPEOD = Taipei Operational Department
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

518.0 kHz Parangipettai Radio, India

12579.0 kHz UAT Moscow Radio, Russian Federation
Warnings still in force - received 210900Z FEB 2026

5720.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft HB-IFA + flight SU1833
PCC = Planning Coordination Controller
PDU = Pilot Display Unit
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
• The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles
• The Altitude Range Change Event is triggered
when the aircraft's altitude exceeds the altitude ceiling
or floor defined in the contract by the ground system
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

518.0 kHz TFX Siglufjördur Radio, Iceland
Saudanes is a lighthouse near Siglufjördur

13276.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft EC-OLG + N520DN + flight WIN902
TI2 = Terminal Information Request
• The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

8677.0 kHz CBV Valparaiso Radio, Chile
Strange horizontal distortion despite fair signal quality ...

8677.0 kHz CBV Valparaiso Radio, Chile
GFS = Global Forecast System
Strange horizontal distortion despite fair signal quality ...

8677.0 kHz CBV Valparaiso Radio, Chile
Strange horizontal distortion despite fair signal quality ...

518.0 kHz JGC Yokohama Radio, Japan
LL = Light List
NW = Navigational Warning

21928.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft A6-EXJ + B-MBS + B-320H + HL7637 + JA216P + 9V-SGA + 9V-SHR + 9V-SHU + flight ANA663
CFD = Centralized Fault Data
DFD = Digital Flight Data
FWS = Flight Warning System
RNP = Required Navigation Performance
TI2 = Terminal Information Request
TLSOP = Airbus enroute report directly to Toulouse in France
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

9982.5 kHz KVM70 Honolulu Meteo, Hawaii

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft A6-EXO + EI-KBK + HZ-AQJ + OH-LWR + SU-GEC + flight RJA707 + UPS3
go2MONITOR's superb Result Viewer has a post processor feature
running after the signal was received, extracting sender
and receiver IDs, position data, and more
For ADS-B signals, the post processing was adapted
to extract airplane positions and their addresses sent
AGM = Miscellaneous Air/Ground Message
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
• The Periodic Contract is a report sent every ... minutes
It specifies the reporting rate at which the avionics is required
to assemble and downlink the requested information to the ground system
The minimum reporting rate is usually not greater than every 14 minutes
but can vary to suit the need of the ground station
This procedure allows longitudinal and lateral separation of aircraft
in oceanic areas to be reduced to 30 nautical miles
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

8942.0 kHz H07 HFDL Shannon Air, Ireland, + flight KAC128 + KAL518

6318.0 kHz IDR Italian Navy Rome, Italy

15025.0 kHz H03 HFDL Reykjavik Air, Iceland, + flight AT940J + YZR744

4610.0 kHz GYA Royal Navy London, United Kingdom

518.0 kHz SUK Quseir Radio, Egypt
BA = British Admiralty

518.0 kHz LZW Varna Radio, Bulgaria

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft A6-EXK + A7-APF + B-MBT + B-32AA + RPC8780 + flight CES287
TI2 = Terminal Information Request
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
• The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy
• The Lateral Deviation Change Event is triggered
when the aircraft's actual position exceeds a lateral distance parameter
from the aircraft's expected position on the active flight plan
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft A6-EXK + B-5942 + flight KZR882
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FCA = Facilities Contact Advisory
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
• The TP4 (= Transport Protocol Class 4) message
notifies the pilot of an ATSU identifier
• The Waypoint Change Event is triggered by a change
made to the Next, or the Next-plus-one waypoint
This change normally occurs due to normal waypoint sequencing by the FMS
The Next or Next-plus-one waypoint can be either an ATS waypoint or a pilot inserted waypoint
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft F-WWJL + OH-LWD
go2MONITOR's superb Result Viewer allows easy selection of MIAM
out of hundreds of decoded messages by means of advanced filter settings ...
go2MONITOR perfectly re-assembles and decodes MIAM CORE data ...
These are often messages in Airbus' XML format
Airbus test flight LFBO - LFBO ...
XML-formatted Airbus enroute test flight report
CFB = Centralized Fault Book
CMS = Cabin Management System
MIAM = Media Independent Aircraft Message
MSN = Manufacturer's Serial Number
NAI = Nacelle Anti-Ice
PACK = Pressurization Air Conditioning Kit
PDU = Pilot Display Unit
RTR = Real-Time Report

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft F-GXLG + F-WWJL + RA73748 + TC-MYA + flight ACA842 + V73851
go2MONITOR's superb Result Viewer has a post processor feature
running after the signal was received, extracting sender
and receiver IDs, position data, and more
For ADS-B signals, the post processing was adapted
to extract airplane positions and their addresses sent
Airbus test flight LFBO - LFBO ...
AFS = Auto Flight System
CFB = Centralized Fault Book
CFDS = Centralized Fault Display System
ECAM = Electronic Centralized Aircraft Monitoring
EIS = Electronic Instrument System
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
GPWC = Ground Proximity Warning Computer
IR = Inertial Reference
MMR = Multi-Mode Receiver

518.0 kHz VCO Canadian Coast Guard Port Caledonia NS, Canada

518.0 kHz IQM Mondolfo Radio, Italy

518.0 kHz ESA Tallinn Radio, Estonia

22656.3 kHz Digital data station

8040.0 kHz GYA Royal Navy London, United Kingdom

21931.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft EC-NUI + HC-CSF + N612UP + XA-VRX + XA-VSF + XA-VYD + flight THY2YC
MMPB - MMUN and MMSD - MMGL cruise data ...
The figures group after the destination is the running number
The first group is the latitude
The second group is the longitude
and its four last figures is the time in hours and minutes
The third group is the FL
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
CMC = Central Maintenance Computer
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
G/TWS = Graphics/Text Weather Server
REQPWI = Predicted Wind Request for FL 360 340 320 300
TTRP = Target Take Off Time Report
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

518.0 kHz NMC United States Coast Guard San Francisco CA, United States of America
BNM = Broadcast Notice to Mariners
CGD = Coast Guard District
LA = Los Angeles
LB = Lighted Buoy
LB = Long Beach
LLNR = Light List Number

518.0 kHz Chukpy Radio, South Korea
JCS = Joint Chiefs of Staff
KHOA = Korea Hydrographic and Oceanographic Agency

7795.0 kHz JMH2 Tokyo Meteo, Japan

490.0 kHz OST Oostende Radio, Belgium
EEZ = Exclusive Economic Zone

490.0 kHz Hamburg Meteo, Germany
NCC = National Co-Ordination Centre

518.0 kHz 3VL Kelibia Radio, Tunisia
NTM = Notice to Mariners

12733.3 kHz CTA Portuguese Navy Lisbon, Portugal

18764.0 kHz RDL Commonwealth of Independent States Navy Saint Petersburg, Russian Federation

16135.0 kHz KVM70 Honolulu Meteo, Hawaii

518.0 kHz NOJ United States Coast Guard Kodiak, Alaska
BNM = Broadcast Notice to Mariners
LLNR = Light List Number

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft AP-BPF + A6-EEY + HZ-NS27 + HZ-NS61 + HZ-NS83 + SU-GCP + flight UPS3
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
CIDS = Cabin Intercommunication Data System
EPSU = Emergency Power Supply Uni
TI2 = Terminal Information Request

12750.0 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction
OPC = Ocean Prediction Center

10063.0 kHz H11 HFDL Panama City Air, Panama, + aircraft XA-VRX + flight UAL63 + VOI396
go2MONITOR's superb Result Viewer has a post processor feature
running after the signal was received, extracting sender
and receiver IDs, position data, and more
For ADS-B signals, the post processing was adapted
to extract airplane positions and their addresses sent
RCD = Request for Departure Clearance
TI2 = Terminal Information Request

12695.5 kHz KFS San Francisco Radio CA, United States of America
MEBA = Marine Engineers Beneficial Association
MMP = Masters, Mates and Pilots

518.0 kHz SUH Alexandria Radio, Egypt
ATON = Aid to Navigation
BA = British Admiralty
EAMS = Egyptian Authority for Maritime Safety
This is the former PLA (Ports and Lighthouses Administration) ...

518.0 kHz SVH Iraklion Radio, Greece

518.0 kHz UDN Novorossiysk Radio, Russian Federation

12382.0 kHz XSG Shanghai Radio, China
CMA = China Meteorological Administration

12382.0 kHz XSG Shanghai Radio, China
CMA = China Meteorological Administration

8682.0 kHz NMC United States Coast Guard San Francisco CA, United States of America
HFO = Honolulu Forecast Office
NCEP = National Centers for Environmental Prediction
NHC = National Hurricane Center
OPC = Ocean Prediction Center
WPC = Weather Prediction Center

7880.0 kHz DDK3 Hamburg Meteo, Germany

8912.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft C-GEXB + EC-NCK + ET-AXK + HL8517 + JA880A + N569DZ + N742AM + PR-TYO + flight GA5880 + NK0830
go2MONITOR's superb Result Viewer has a post processor feature
running after the signal was received, extracting sender
and receiver IDs, position data, and more
For ADS-B signals, the post processing was adapted
to extract airplane positions and their addresses sent
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
SAEZ - MMMX enroute parameters ...
DFB = Digital Flight Bag
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FCA = Facilities Contact Advisory
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

518.0 kHz GNI Niton Radio, United Kingdom
TSS = Traffic Separation Scheme

4346.0 kHz NMC United States Coast Guard San Francisco CA, United States of America

12603.5 kHz SVO Olympia Radio, Athens, Greece

490.0 kHz EJM Irish Coast Guard Malin Head, Ireland
SWW = Strong Wind Warning

22462.8 kHz FUJ French Navy Noumea, New Caledonia
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

518.0 kHz Cape Columbine Radio, South Africa (Republic of)
Warnings still in force - received 010320Z FEB 2026
CNW = Coastal Navigational Warning
SAN = South African Navy

12577.0 (not 12579.0!) kHz L2C Argentinian Coast Guard Buenos Aires, Argentina
This frequency is allocated to worldwide distress and safety transmissions
and must not be used for NBDPT MSI broadcasts!

4822.3 kHz Digital data station

3585.0 kHz HLL8 Soul Meteo, South Korea

4209.5 kHz XVN Nha Trang Radio, Viet Nam
Local time used here since received at 1600 UTC ...

4210.0 (not 4209.5!) kHz L2C Argentinian Coast Guard Buenos Aires, Argentina
SHN = Servicio de Hidrografia Naval

518.0 kHz L2G Argentinian Coast Guard Buenos Aires, Argentina

12858.8 kHz FUE French Navy Brest, France

518.0 kHz NMF United States Coast Guard Boston MA, United States of America
BNM = Broadcast Notice to Mariners

5069.8 kHz Digital data station

11030.0 kHz VMC Charleville Meteo QLD, Australia

13920.0 kHz VMC Charleville Meteo QLD, Australia
MSLP = Mean Sea Level Pressure
TC = Tropical Cyclone

11281.8 kHz Digital data station

16990.3 kHz Digital data station
CK018 = 18 groups
0124 0757 = date-time group
Chinese telegraph code ...

518.0 kHz Grimeton Radio, Sweden
GNSS = Global Navigation Satellite System
TSS = Traffic Separation Scheme

518.0 kHz XSI Sanya Radio, China
Warnings still in force - received 231800Z JAN 2026

22527.0 kHz NMC United States Coast Guard San Francisco CA, United States of America
NCEP = National Centers for Environmental Prediction
OPC = Ocean Prediction Center

22527.0 kHz NMC United States Coast Guard San Francisco CA, United States of America
NCEP = National Centers for Environmental Prediction

518.0 kHz 9HD Valetta R, Malta
NTM = Notice to Mariners
VTS = Vessel Traffic Service

518.0 kHz JNL Otaru Radio, Japan
LL = Light List

518.0 kHz VAU Canadian Coast Guard Chebogue NS, Canada
PTH-FG = Fog Banks

518.0 kHz JNR Moji Radio, Japan

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + flight AIC201

16826.3 kHz XSQ Guangzhou Radio, China
CMA = China Meteorological Administration

3585.0 kHz HLL8 Soul Meteo, South Korea

3585.0 kHz HLL8 Soul Meteo, South Korea

3585.0 kHz HLL8 Soul Meteo, South Korea

3585.0 kHz HLL8 Soul Meteo, South Korea

518.0 kHz VAJ Canadian Coast Guard Prince Rupert BC, Canada
Digby is a small island off Prince Rupert
Haida Gwaii = ex Queen Charlotte Islands

12711.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

5195.0 kHz DRA5 Kiel, Germany

4209.5 kHz XVN Nha Trang Radio, Viet Nam

12056.0 kHz Digital data station

11086.5 kHz GYA Royal Navy London, United Kingdom

4298.0 kHz NOJ United States Coast Guard Kodiak, Alaska
Strange horizontal distortion despite fair signal quality ...

4298.0 kHz NOJ United States Coast Guard Kodiak, Alaska
Strange horizontal distortion despite fair signal quality ...
NCEP = National Centers for Environmental Prediction

6619.0 kHz H10 HFDL Muan Air, South Korea, + flight CCA975 + GTI654

3585.0 kHz HLL8 Soul Meteo, South Korea
GK2A = GEO KOMP 2A = Geostationary Korea Multi Purpose Satellite
KMA = Korea Meteorological Administration

490.0 kHz Sellia Marina Radio, Italy
CLV = Cable Lay Vessel
EF = Elenco Fari = Light List Number

4209.5 kHz XSG Shanghai Radio, China
CGCS = China Geodetic Coordinate System
MSA = Maritime Safety Administration

518.0 kHz Don Sak Radio, Thailand
Warnings still in force - received 041420Z JAN 2026
See 5 AUG 2021 NAVTEX Panel Report

518.0 kHz Keating Point Radio, Andaman Islands, India
IMD = India Meteorological Department
INW = Indian Navigational Warning

518.0 VBE Canadian Coast Guard Pass Lake ONT, Canada
The ice concentration is given in tenths
BW = Bergy Water
CONS = Consolidated
FYI = First-Year Ice
GI = Grey Ice
GWI = Grey-White Ice
IF = Ice Free
MEDI = Medium Lake Ice
MYI = Multi-Year Ice
NI = New Ice
OI = Old Ice
OW = Open Water
THI = Thin Lake Ice
TKI = Thick Lake Ice
TR = Trace Of
SYI = Second-Year Ice
VTKI = Very Thick Lake Ice

2610.2 kHz FUO French Navy Toulon, France

8106.9 kHz SWA Athens Meteo, Greece

11306.0 kHz H16 HFDL Barrigada Air, Guam, + flight DAL38

13988.5 kHz JMH4 Tokyo Meteo, Japan

11387.0 kHz H04 HFDL Riverhead Air NY, United States of America, + flight ETH519 + IBE031

518.0 kHz NMW United States Coast Guard Astoria OR, United States of America
2025, not 2015 ...

13044.3 kHz FUV French Navy Jibuti, Djibouti
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

6646.0 kHz H09 HFDL Barrow Air, Alaska, + aircraft B-1076 + EC-OLG + N841FD + flight CHH729
go2MONITOR's superb Result Viewer has a post processor feature
running after the signal was received, extracting sender
and receiver IDs, position data, and more
For ADS-B signals, the post processing was adapted
to extract airplane positions and their addresses sent
EC-OLG is a scheduled service NZAA - RJAA - NFFN - NZAA
by Wamos Air on wet lease for Air New Zealand ...
KMEM - PANC cruise data ...
The figures group after the destination is the running number
The first group is the latitude
The second group is the longitude
and its four last figures is the time in hours and minutes
The third group is the FL
AGM = Miscellaneous Air/Ground Message
TI2 = Terminal Information Request

5514.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + flight ACA96 + APZ131

518.0 kHz Centre Regional Operationnel de Surveillance et de Sauvetage Toulon, France
LB = Lighted Buoy
LF = Light Float

6646.0 kHz H09 HFDL Barrow Air, Alaska, + aircraft XA-ARU + flight NCA172
go2MONITOR's superb Result Viewer has a post processor feature
running after the signal was received, extracting sender
and receiver IDs, position data, and more
For ADS-B signals, the post processing was adapted
to extract airplane positions and their addresses sent
Message H1 is corrupted ...
EGT = Exhaust Gas Temperature
• Cruise Performance Report RKSI - PANC ...
= collection of data over a period of time
in which the aircraft met the appropriate stability criteria
If no stability is detected, then the report
ends with NO STABLE FRAME CONDITION
• Performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...

518.0 kHz PKX Jakarta Radio, Indonesia
TC = Tropical Cyclone

4209.5 kHz XVN Nha Trang Radio, Viet Nam

518.0 kHz SVK Kerkyra Radio, Greece

518.0 kHz 3BM Port Louis Radio, Mauritius

8582.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

490.0 kHz Grindavik Radio, Iceland

16976.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

11354.0 kHz H09 HFDL Barrow Air, Alaska, + aircraft CN-ROJ + RA73723 + RA73752
Solar cycle maximum - and the ionosphere going crazy:
OOOI downlinks from a GMMN - UUEE trans-European flight ... via Alaska!
Crew name and personnel number list ...
Perfect OOOI: on 0348, in 0354, door open 0359, closed 0559, out 0603, off 0620
CFB = Centralized Fault Book
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
GPSSU = Global Positioning System Sensor Unit
IR = Inertial Reference
MMR = Multi-Mode Receiver
PF = Pilot Flying
PM = Pilot Monitoring

11354.0 kHz H09 HFDL Barrow Air, Alaska, + flight AIC147 + CES583

8416.5 kHz VFF Canadian Coast Guard Iqaluit NUN, Canada

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

4209.5 kHz XSG Shanghai Radio, China

8416.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

518.0 kHz 4XO Haifa Radio, Israel
NTM = Notice to Mariners
RCC = Rescue Coordination Centre

518.0 kHz 5BA Nicosia Radio, Cyprus
JRCC = Joint Rescue Coordination Centre

518.0 kHz UGE Arkhangelsk Radio, Russian Federation

4209.5 kHz TAH Istanbul Radio, Turkey

4209.5 kHz TAH Istanbul Radio, Turkey

490.0 kHz IGS Piombino Radio, Italy

16559.0 kHz XSG Shanghai Radio, China
CMA = China Meteorological Administration

16826.3 kHz XSQ Guangzhou Radio, China
CMA = China Meteorological Administration
MSA = Maritime Safety Administration

518.0 kHz Gislovshammar Radio, Sweden

518.0 kHz UUI Odessa Radio, Ukraine
Warnings still in force - received 272230Z NOV 2025

8894.0 kHz H11 HFDL Panama City Air, Panama, + aircraft CN-RHB + EC-NVR + HP1538 + N742AM + N889FD + flight VIV202
LEMD - MMMX cruise data ...
The figures group after the destination is the running number
The first group is the latitude
The second group is the longitude
and its four last figures is the time in hours and minutes
The third group is the FL
DFB = Digital Flight Bag
MDPWI = Meteorological Data - Predicted Wind for FL 370 350 330 310
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

17016.8 kHz KPH San Francisco Radio CA, United States of America
MEBA = Marine Engineers Beneficial Association

13570.0 kHz HLL Soul Meteo, South Korea

13570.0 kHz HLL Soul Meteo, South Korea

16806.5 kHz NMC United States Coast Guard San Francisco CA, United States of America

13351.0 kHz H05 HFDL Auckland Air, New Zealand, + flight CES528 + CES633

518.0 kHz NMA United States Coast Guard Miami FL, United States of America
BNM = Broadcast Notice to Mariners
CFR = Code of Federal Regulations

17916.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft EC-NIG + VN-A898 + XA-ADD + flight AVA115 + AVA116
go2MONITOR's superb Result Viewer has a post processor feature
running after the signal was received, extracting sender
and receiver IDs, position data, and more
For ADS-B signals, the post processing was adapted
to extract airplane positions and their addresses sent
SAEZ - MMMX cruise data ...
The figures group after the destination is the running number
The first group is the latitude
The second group is the longitude
and its four last figures is the time in hours and minutes
The third group is the FL
DFB = Digital Flight Bag
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAR ADS = Facilities Application Response ADS-C
FAR ATC = Facilities Application Response
FCO ADS = Facilities Contact ADS-C
FCO ATC = Facilities Contact CPDLC
FMH = Facilities Message Header = Flight Number
FPO = Facilities Current Position
• CPDLC ADS-C message headers are defined e.g. in
ICAO's Global Operational Data Link Manual here or here
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here
• Codes of ACARS Message Labels can be found here

518.0 kHz EAR La Coruna Radio, Spain

12786.0 kHz NMC United States Coast Guard San Francisco CA, United States of America

4500.0 kHz Digital data station

21997.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + flight SVA103

518.0 kHz ZBM Hamilton Harbour Radio, Bermuda
CFR = Code of Federal Regulations

518.0 kHz VOK Canadian Coast Guard Cartwright NFLD, Canada

518.0 kHz EAC Tarifa Radio, Spain
UAS = Unmanned Aerial System

518.0 kHz CTV Portuguese Navy Lisbon, Portugal
CENCOMAR = Centro de Comunicacao de Dados e Cifra da Marinha
LL = Light List

518.0 kHz CTV Portuguese Navy Lisbon, Portugal
CENCOMAR = Centro de Comunicacao de Dados e Cifra da Marinha
LL = Light List

13570.0 kHz HLL Soul Meteo, South Korea
GloSea = Global Seasonal Forecasting System

518.0 kHz Balasore Radio, India

13315.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft N762AV + PS-AJB + flight AZU485 + CSC675
go2MONITOR's superb Result Viewer has a post processor feature
running after the signal was received, extracting sender
and receiver IDs, position data, and more
For ADS-B signals, the post processing was adapted
to extract airplane positions and their addresses sent
REQPWI = Predicted Wind Request for FL 370 350 330

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

518.0 kHz Muttam Point Radio, India
IMD = India Meteorological Department
INW = Indian Navigational Warning
MSC = Mediterranean Shipping Company

12666.3 kHz FUM French Navy Papeete, Tahiti, Polynesia (French)
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

7396.9 kHz HSW64 Bangkok Meteo, Thailand

7396.9 kHz HSW64 Bangkok Meteo, Thailand

4209.5 kHz XVG Hai Phong Radio, Viet Nam

21949.0 kHz H08 HFDL Johannesburg Air, South Africa (Republic of), + aircraft CN-ROP + RA73099 + RA73154 + SU-GDA + SU-GEK + VP-BAK + 5Y-KYD + 5Y-KYE + flight XA054E
AGM = Miscellaneous Air/Ground Message
CCO = Operations Control Centre
DFB = Digital Flight Bag

8416.5 kHz VFF Canadian Coast Guard Iqaluit NUN, Canada
003160023 is the station's MMSI (Maritime Mobile Service Identity) code
MCTS = Marine Communications and Traffic Services

12412.5 kHz NOJ United States Coast Guard Kodiak, Alaska
NCEP = National Centers for Environmental Prediction

13074.0 kHz JFC Misaki Fisheries Radio, Japan
Latest tuna market prices ...
The date reads 7 8 20 = 2025 August 20
since the traditional Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

6220.0 kHz IDN Italian Navy Napoli, Italy

12579.0 kHz NMO United States Coast Guard Honolulu, Hawaii

13074.0 kHz JFC Misaki Fisheries Radio, Japan
Japanese Coast Guard navigational warnings ...
The date reads 7 8 12 = 2025 August 12
since the traditional Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

21997.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft 5Y-KYE + 5Y-KYF + ZS-SXJ + flight AEA042 + NK1379
go2MONITOR's superb Result Viewer has a post processor feature
running after the signal was received, extracting sender
and receiver IDs, position data, and more
For ADS-B signals, the post processing was adapted
to extract airplane positions and their addresses sent
Solar cycle maximum - and the ionosphere going crazy:
METAR uplink for a GOBD - DIAP West African hop ... via Santa Cruz!
Solar cycle maximum - and the ionosphere going crazy:
METAR uplink for a FLHN - HKJK East African hop ... via Santa Cruz!
DT = Destination, followed by the runway number
FN = Flight Number
TS = Time Stamp
• PRG = Flight Progress Report sent shortly
(i.e. 1 hour - 10 minutes) before arrival,
typically including destination airport followed by
estimated runway for landing, estimated FOB, ETA, and FN

8416.5 kHz NMO United States Coast Guard Honolulu, Hawaii

8416.5 kHz NMO United States Coast Guard Honolulu, Hawaii

8416.5 kHz NMO United States Coast Guard Honolulu, Hawaii

518.0 kHz EAV Valencia Radio, Spain

12668.3 kHz FUG French Navy Saissac, France
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

12412.5 kHz NOJ United States Coast Guard Kodiak, Alaska
Strange horizontal distortion despite fair signal quality ...
NCEP = National Centers for Environmental Prediction

16907.5 kHz JFA Funabashi Fisheries Radio, Japan
NOAA satellite settings for JRC / FURUNO fish finder equipment ...
The date reads 7 7 30 = 2025 July 30
since the traditional Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

518.0 kHz CBV Valparaiso Radio, Chile

518.0 kHz L2T Argentinian Coast Guard Mar del Plata, Argentina

17916.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft RA73170 + RA73718 + RA73777 + flight CES510
Solar cycle maximum - and the ionosphere going crazy:
POSREP downlinks from UUEE - UNTT Central Asian flights ... via Santa Cruz!
Solar cycle maximum - and the ionosphere going crazy:
POSREP downlinks from a UNOO - UUEE Uralski hop ... via Santa Cruz!

518.0 kHz Vengurla Point Radio, India
IMD = India Meteorological Department

4209.5 kHz SVH Iraklion Radio, Greece

518.0 kHz XYM Myeik Radio, Myanmar

21997.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft CS-TOO + EI-HJP + HZ-NS76 + N843FD + PK-GMQ + PR-TYM + PR-TYP + PR-YYE + PR-YYJ + flight TAM365
Solar cycle maximum - and the ionosphere going crazy:
Cruise parameters and weather request downlink from a OERK - HAAB Red Sea hop ... via Santa Cruz!
Fly Bondi LV-KEG is ex Garuda PK-GMQ
Avionics still programmed on the latter ...
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
AFS = Auto Flight System
CCC = Core Compartment Cooling
CFB = Centralized Fault Book
DA = Departure Airport
DM = Time Stamp
DRINFO = Door Closure Time
DS = Destination Airport
ECU = Electronic Control Unit
EFCS = Electronic Flight Control System
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
RA = Radio Altimeter
WHC = Windshield Heat Computer
WN = Warning Number, followed by the Date-Time Group

518.0 kHz XSG Shanghai Radio, China
MSA = Maritime Safety Administration

6825.0 kHz French Army Mont-Valerien, France

518.0 kHz CBP Puerto Montt Radio, Chile
R/V = Research Vessel

518.0 kHz XSX Chi-Lung Radio, Taiwan (Democratic Republic of China)

518.0 kHz V5W Walvis Bay Radio, Namibia
CNW = Coastal Navigational Warning
SAN = South African Navy

518.0 kHz LGQ Rogaland Radio, Norway

518.0 kHz NMG United States Coast Guard New Orleans LA, United States of America

518.0 kHz L3B Argentinian Coast Guard Comodoro Rivadavia, Argentina

518.0 kHz L2N Argentinian Coast Guard Bahia Blanca, Argentina

486.0 kHz XSV Tianjin Radio, China
Chinese teleprinter code after Latin alphabet header
AIZAIZAIZAIZ corresponds to NNNN
According to this NAVAREA 11 document, XSV uses indeed
transmitter identification character S on both 518 and 486 kHz

518.0 kHz LGP Bodoe Radio, Norway

10063.0 kHz H11 HFDL Panama City Air, Panama, + flight KAL081 + UAL844

13303.0 kHz H17 HFDL Telde Air, Canary Islands, + flight AC0833 + ASL70Z

518.0 kHz JNX Kushiro Radio, Japan
LL = Light List

13264.0 kHz Shannon Air / Volmet, Ireland
go2MONITOR has the ability to transcribe audio files into text automatically ...
This function is implemented by using an external open-source tool called 'Whisper'
The Speech-to-Text function is integrated in the superb Result Viewer for results containing audio files
The new function opens up completely new possibilities, e.g.
• Searching for spoken content and generating content-based alerts and warnings
• Simply forwarding the spoken content in text form to other systems or software
• Using of translation to easily understand other spoken languages

518.0 kHz VCP Canadian Coast Guard Robin Hood Bay NFLD, Canada

518.0 kHz OXF Simiutaq Radio, Greenland

17421.8 kHz PWR • PWS Brazilian Navy Rio Recife • Salvador, Brazil

10030.0 kHz H15 HFDL Muhurroq Air, Bahrain, + flight MAU53 + UAE51P

16023.7 kHz Egyptian Embassy Washington DC, United States of America, to Ministry of Foreign Affairs Cairo, Egypt

7778.7 kHz 44406 Egyptian Embassy Delhi, India, to 99904 Ministry of Foreign Affairs Cairo, Egypt

State-of-the-art digital data signals have been tested since 2013
by innovative broadcast stations such as the Voice of America ...
Here's a 6067.1 kHz MFSK-16 emission on the lower sideband
of AM station Channel 292 transmitting both sidebands
± 2900 Hz from the carrier frequency 6070.0 kHz
New 2026 edition of our Perseus Frequency Database
now shows utility stations' callsigns as well!

8454.8 kHz FUG French Navy Saissac, France
New 2026 edition of our Perseus Frequency Database
now shows utility stations' callsigns as well!

6095.0 kHz Broadcast (!) radio station KBC, Netherlands via Germany
testing state-of-the-art digital data signals
such as parallel MFSK emissions on 6093.5 and 6096.5 kHz
i.e. on both sidebands ± 1500 Hz from the carrier frequency 6095.0 kHz
New 2023 edition of our Perseus Frequency Database
now shows utility stations' callsigns as well!

18529.5 kHz 7RV50 Algerian Embassy Moscow, Russian Federation, to 7RQ20 Ministry of Foreign Affairs El Djaza'ir, Algeria

18063.3 kHz RC2JAL International Committee of the Red Cross Jalalabad, Afghanistan, via MB1TBI International Committee of the Red Cross Tbilisi, Georgia, to RC2KAB International Committee of the Red Cross Kabul, Afghanistan

13973.0 kHz RC2PES International Committee of the Red Cross Peshawar, Pakistan, via MB1TBI International Committee of the Red Cross Tbilisi, Georgia, to RC2MAZ International Committee of the Red Cross Mazar-e Sherif, Afghanistan