13303.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft 16060S + flight GLG739
Aircraft 16060S = flight BLUE41 is United States Air Force ...
AGM = Miscellaneous Air/Ground Message
BJR = Bonjour
CCO = Operations Control Centre
CDB = Commandant Du Bord
• 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

13303.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft C-FITL + N521DN + N568DZ + N12005 + 6V-SEN + 16060S + flight ME0571
Aircraft 16060S = flight BLUE41 is United States Air Force ...
AFMS = Aircraft Fuel Management System
CI = Consistency Index
DFB = Digital Flight Book
DX = Dispatcher
ETE = Estimated Time Elapsed
ETP = Equitime Point
FLR = Failure
FMS = Flight Management System
FR = Fault Report, followed by the Date-Time Group
PFL = Planned Flight Level
PFR = Planned Fuel Remaining
RDA = Route Data Assessment
RDC = Route Data Calculation
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 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

17919.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft B-MCD + JA902A+ N452PA + N573DZ + TC-LGS + XA-ADC + 9H-MLV + 9V-SCP + flight UAL187
LEMD - MMMX cruise data ...
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 Book
DT = Destination
FN = 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

6450.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

6450.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

4209.5 kHz XVG Hai Phong Radio, Viet Nam

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

4209.5 kHz NRV United States Coast Guard Apra Harbour, Guam
BNM = Broadcast Notice to Mariners
FMSG = Forces Micronesia Sector Guam
GU = Guam

4209.5 kHz XVN Nha Trang Radio, Viet Nam

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-7878 + B-8385 + HL7211 + RPC8612 + flight SIA295
YMML - ZBAA enroute parameters ...
DFB = Digital Flight Book
FHS = Flight Hour Services
FLAS = Flight Level Allocation Scheme
FLOS = Flight Level Orientation Scheme
WN = Warning Number, followed by the Date-Time Group
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FCA = Facilities Contact Advisory
FMH = Facilities Message Header = Flight Number
FRP = Facilities Response
• Engine Cruise Report YMML - ZBAA ...
= 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
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
• Codes of FIRs providing data link services
such as EGGX PAZN YMMM ANC____ FUK____ YUK____
can be found here

13315.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + flight M38461

16027.9 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction

518.0 kHz IQM Mondolfo Radio, Italy

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

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-221F + B-304E + B-325R + B-6332 + B-6756 + 9V-SMT + flight CES500
DFB = Digital Flight Book
LID = Landing Information Delivery
PB = Parking Bay
PDC = Pre-Departure Clearance
• 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

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

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 Book

8977.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft B-5962 + RA73743 + YR-KID + 87-3601 + flight SU2137
87-3601 is a JASDF Boeing 767-2FK(ER) tanker ...
ASC = Air Service Command
CFB = Centralized Fault Book
CFDS = Centralized Fault Display System
DT = Destination
FLR = Failure
FN = Flight Number
FR = Fault Report, followed by the Date-Time Group
JASDF = Japan Air Self-Defence Force
MDDU = Multipurpose Disk Drive Unit
MMR = Multi-Mode Receiver
REQPRG = Request Flight Progress Report
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
• 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

4209.5 kHz XVG Hai Phong Radio, Viet Nam

6565.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-KQN + EI-MAA + HL7635 + HL7792 + N865FD + N965AM + flight CCA417
L/R engine data ...
RKSI - MMMX cruise data ...
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
BSM = Brake System Monitoring
CFD = Centralized Fault Data
DFB = Digital Flight Book
EDR = Eddy Dissipation Rate
ITA = IATA Turbulence Aware Platform
PDU = Pilot Display Unit
TI2 = Terminal Information Request
• The Basic or Periodic Report gives position - trajectory intent - speed vector data
plus data for navigational accuracy
• 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

10027.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft A6-EXD + B-307Y + B-18918 + flight FDX77
DT = Destination
FN = Flight Number
REQPRG = Request Flight Progress Report
• 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

4210.5 (not 4209.5!) 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 CN-ROJ + LV-KHT + N26970 + PR-TYU + XA-AMX + flight SIA277 + UAE7DK
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:
ETA request uplink for a GMMN - LIMC West Mediterranean flight ... via Auckland!
L/R engine data ...
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
MMMX - SBGR cruise data ...
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
BSM = Brake System Monitoring
CCO = Operations Control Centre
DFB = Digital Flight Book
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

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

8416.5 kHz VFF Canadian Coast Guard Iqaluit NUN, Canada
MCTS = Marine Communications and Traffic Services
OW = open water
WVS = World Vector Shoreline

8416.5 kHz VFF Canadian Coast Guard Iqaluit NUN, Canada
MCTS = Marine Communications and Traffic Services
OVR-OW = over open water
WVS = World Vector Shoreline

518.0 kHz 9WW21 Miri Radio, Sarawak, Malaysia
Totally outdated meteorological warnings of several months ago ...
Alamak! Tak boleh tahan lah!
First Category = Sungai Sarawak - Sungai Sadong - Sungai Lundu
Second Category = Sungai Batang Lupar
Third Category = Sungai Regang up to Brunei

518.0 kHz Sandakan Radio, Sabah, Malaysia
Warnings still in force - received 221500Z AUG 2025
NTM = Notice to Mariners

11348.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-6010 + B-18903 + HL8258 + HL8387 + N503DN + N521DN + flight CCA417
PMDY is an ETOPS emergency alternate airport
for trans-Pacific flights with RWY 6/24 = 2377 metres ...
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

11348.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft HL8387 + JA10VA + N528DN + N614UP + N642FE + XA-VVD + flight DAL8
A NOTAM decoder can be found e.g. here
AGM = Miscellaneous Air/Ground Message
FMC = Flight Management Computer
FMS = Flight Management System
LGTM = Light Minus Turbulence = relatively weaker intensity
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

7433.5 kHz HLL5 Soul Meteo, South Korea

3585.0 kHz HLL8 Soul Meteo, South Korea
KMA = Korea Meteorological Administration

17985.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft B-20CJ + F-HUVB + F-WWJL + OE-LZC + OE-LZD + flight IBE03Z
Airbus' XML failure report system ...
A350 test flight LFBO - LFBO ...
CFB = Centralized Fault Book
CMS = Cabin Management System
CPIOM = Core Processing Input Output Modules
CTOT = Calculated Take-Off Time (used for slot allocation)
FCGS = Flight Control and Guidance System
FDE = Fault Detection and Exclusion
MSN = Manufacturer's Serial Number
POX = Position Report
RTR = Real-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

8927.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft N378HA + RPC8609 + flight ACO189 + AV0226
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
ATSU = Air Traffic Service Unit
MOC = Maintenance Operations Center
MX = Maintenance
• 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

6661.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft A6-XWF + A7-ANB + B-1466 + HL8388 + N132FE + flight DLH459
• 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

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

12412.5 kHz NOJ United States Coast Guard Kodiak, Alaska

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

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-32DV + B-220F + B-225C + JA847A + N582UP + N783AM + N12020 + RA73677 + RPC9930 + flight SIA33
EHAM - ZSPD and MMMY - RKSI cruise data ...
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
AFS = Auto Flight System
CFB = Centralized Fault Book
CFD = Centralized Fault Data
DA = Departure Airport
DFB = Digital Flight Book
DM = Time Stamp
DS = Destination Airport
DT = Destination, followed by the runway number
EFCS = Electronic Flight Control System
FN = Flight Number
FR = Fault Report, followed by the Date-Time Group
GPWC = Ground Proximity Warning Computer
RA = Radio Altimeter
REQPWI = Predicted Wind Request for FL 360 340
RESPWI/AC = FMS downlink acceptance and insertion of PWI = Predicted Wind uplink data
RESPWI/AK = FMS downlink acknowledgement of PWI = Predicted Wind uplink data
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
• 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

9110.0 kHz NMF United States Coast Guard Boston MA, United States of America
Tropical Cyclone Erin ...
NCEP = National Centers for Environmental Prediction

9110.0 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction
OPC = Ocean Prediction Center

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

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

8912.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft A6-XWH + UK78706 + flight VIR135
CFB = Centralized Fault Book
CMCF = Central Maintenance Computing Function
DB = Dash Board
DCA = Data Communication Architecture
EOR = End of Report
FRC = Fault Reporting Code
GPM = General Processing Module
HYDIF = Hydraulic Interface Function
INR = Integrated Navigation Receiver
NCMM = Network Channel Management Monitor
• 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

5655.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft JA804A + JA902P + N117FE + 9V-SHA + 9V-SHP + flight CES980
Code figures for VTBS runways braking action - see e.g. here
AGM = Miscellaneous Air/Ground Message
ITC = Inter-Tropical Convergence Zone
RETIL = Rapid Exit Taxiway Indicator 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

5655.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft A6-ATD + N886FD + 5Y-KZD + flight CES574
• 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
• 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-8495 + JA812A + JA823P + JA833A + RA73677 + 9V-SHB + 9V-SHE + flight UAL839
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
EDCT = Expect Departure Clearance Time
FR = Fault Report, followed by the Date-Time Group
ITM = Itami
MOC = Maintenance Operations Center
MX = Maintenance
OCC = Operations Control Centre
RA = Radio Altimeter
WN = Warning Number, followed by the Date-Time Group
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
• 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

13303.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft C-GUBT + G-VEII + N523DN + flight ETH517 + UAL938
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
FMC = Flight Management Computer
FMS = Flight Management System
REQPWI = Predicted Wind Request for FL 410 390 370 340

8885.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft A6-ETQ + HZ-NS28 + HZ-NS39 + HZ-NS79 + SU-GDY + 5Y-KCA + flight CBJ662
DT = Destination, followed by the runway number
FN = 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

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

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft N24990 + RA73178 + RPC9936 + flight AIC311 + HVN779
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
ADIRU = Air Data Inertial Reference Unit
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
REQPWI = Predicted Wind Request for FL 320
• 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 NMQ United States Coast Guard Long Beach CA, United States of America
BNM = Broadcast Notice to Mariners
DEXO = Detonation Explosion
SD = San Diego

6244.8 kHz Digital data station

6220.0 kHz IDN Italian Navy Napoli, Italy

490.0 kHz SVK Kerkyra Radio, Greece

518.0 kHz VRX Hong Kong Radio, China
TC = Tropical Cyclone

518.0 kHz XVS Ho Chi Minh City Radio, Viet Nam

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

12579.0 kHz NMO United States Coast Guard Honolulu, Hawaii

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft B-32AG + B-32D2 + N631UP + 9M-MAC + flight BA04YW + QTR706
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
CFB = Centralized Fault Book
CIDS = Cabin Intercommunication Data System
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
IPCU = Ice Protection Control Unit
TDZ = Touchdown Zone
TI2 = Terminal Information Request

13988.5 kHz JMH4 Tokyo Meteo, Japan

13988.5 kHz JMH4 Tokyo Meteo, Japan

8936.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft B-32G6 + B-18901 + HL7641 + N337QT + N405KZ + N527DN + flight AC0002
TI2 = Terminal Information Request
• Engine Cruise Report MMGL - KLAX ...
= 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
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
• 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-7836 + B-18901 + HL8082 + HS-XTH + N276UP + N405KZ + N863FD + XA-MFG + flight PR0221
LEMD - MMMX cruise data ...
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
AOC = Airline Operations Control
CFD = Centralized Fault Data
DFB = Digital Flight Book
DFD = Digital Flight Data
ECS = Environmental Control System
WSI FPG = Weather Services International Flight Plan Guidance
• 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

5195.0 kHz DRA5 Kiel, Germany

8191.0 kHz RMP Commonwealth of Independent States Navy Kaliningrad, Russian Federation

518.0 kHz A9M Hamala Radio, Bahrain
BA = British Admiralty
MENAS = Middle East Navigation Aids Service
MEGULITE = Middle East Gulf Lighting Service

17919.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft B-1356 + CS-TON + N570UP + N577UP + N605UP + N620UP + N854FD + SE-DMS + 9V-SJA + flight CAO841
PHNL runway lengths ...
The INRANGE message announces the aircraft being within VHF range of the DS
CFD = Centralized Fault Data
DFD = Digital Flight Data
ECS = Environmental Control System
LAHSO = Land And Hold Short Operations
LTAET = Less Than All Engine Taxi
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
• 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

17919.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft B-1356 + B-5642 + B-6792 + JA383A + JY-BAE + N509DN + N605UP + N854FD + N77006 + flight NK2223
AGM = Miscellaneous Air/Ground Message
AOC = Airline Operations Control
CFD = Centralized Fault Data
LAHSO = Land And Hold Short Operations
TI2 = Terminal Information Request
TOC = Top of Climb
• 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

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-30CW + B-304N + B-6591 + B-18915 + HL8360 + JA202P + JA205P + N626UP + flight CCA450
AGM = Miscellaneous Air/Ground Message
DT = Destination
FN = Flight Number
LID = Landing Information Delivery
PDC = Pre-Departure Clearance
OCC = Operations Control Centre
REQPRG = Request Flight Progress Report
• 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

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-32D2 + B-58509 + HL8360 + JA213P + JA808A + N945AV + XA-VVD + flight CCA453
AGM = Miscellaneous Air/Ground Message
BOF = Burn-Off Fuel
CFB = Centralized Fault Book
CFD = Centralized Fault Data
FCMC = Fuel Control and Monitoring Computer
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
OCC = Operations Control Centre
TTK = True Track
W/C = Wind Component
• Engine Cruise Report SKBO - KMIA ...
= 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
• Aircraft in-flight 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 ...

16907.5 kHz JFA Funabashi Fisheries Radio, Japan

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

17025.8 kHz Digital data station

15025.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft A6-EVJ + A7-ANP + F-HRBA + G-VRIF + N438AM + XA-ADD + flight UAE2
LFPG - MMMX and MMMX - LEMD cruise data ...
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
AA = Arrival Airport
AP = Approach type and runway number
DA = Departure Airport
DFB = Digital Flight Book
FMS = Flight Management System
FPN = Flight Plan Report downlink
REQPWI = Predicted Wind Request for FL 410 390 360 340
RESPWI/AC = FMS downlink acceptance and insertion of PWI = Predicted Wind uplink data
RESREQ/AK = FMS downlink acknowledgement of a REQFPN uplink
• 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-EVH + A7-ANG + N12006+ flight CCA939 + KAL917
DT = Destination, followed by the runway 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
• 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

14467.3 kHz DDH8 Hamburg Meteo, Germany
DWD = Deutscher Wetterdienst

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

13276.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft N620FE + flight UAL981
DFB = Digital Flight Book
DA = Departure Airport
DS = Destination Airport
DX = Dispatcher
EFS = Enhanced Fuel System
FPR = Flight Plan Route
TI2 = Terminal Information Request
WTB = Weight and Balance

518.0 kHz ZSD Durban Radio, South Africa (Republic of)
SAWS = South African Weather Service

13276.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft C-FIVR + CN-RGB + N574DZ + N77006 + flight VIR73Q
• 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

11086.5 kHz GYA Royal Navy London, United Kingdom

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft B-2482 + N608UP + N853GT + N975AK + flight G40651
KSEA - PHNL cruise parameters ...
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
DFB = Digital Flight Book
• 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
L6N = ACG Paranà on VHF - see here
L7J = ACG Ituzaingó on VHF - see here

12817.8 kHz Digital data station

16806.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

15025.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft CN-RHA + N183AM + N965AM + N24973 + 9XR-WX + flight CES554
Code figures for EBBR runways braking action - see e.g. here
AIRINC should read ARINC ...
MMMX - EGLL and MMMX - EHAM cruise data ...
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 Book
MNT = Maintenance Message
RSCD = Runway Surface Condition
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

7880.0 kHz DDK3 Hamburg Meteo, Germany

7880.0 kHz DDK3 Hamburg Meteo, Germany
ICON = Icosahedral Nonhydrostatic Model

17919.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft HL7642 + JA824P + RPC8604 + 9V-SDA + 9V-SHO + 9V-SHR + flight CCA134 + FDX602
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
ZFW + TOF = TOW - TIF = LAW + UNDLD = MAX
AGM = Miscellaneous Air/Ground Message
CFD = Centralized Fault Data
OCC = Operations Control Centre
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
• 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 N527DN + N529DN + N747EF + N866FD + 60023B + flight VS0085
PMDY is an ETOPS emergency alternate airport
for trans-Pacific flights with RWY 6/24 = 2377 metres ...
CFB = Centralized Fault Book
GOCC = Global Operations Control Center

17919.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft F-HTYN + N507DN + N529DN + XA-VVB + flight ACA342 + UAL78
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
XML-formatted Airbus A350 enroute failure report ...
AGM = Miscellaneous Air/Ground Message
CFD = Centralized Fault Data
DFD = Digital Flight Data
FCRM = Flight Control Remote Module
• 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

15451.8 kHz Digital data station

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

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

6661.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft JA17KZ + LV-KHU + N526DN + N919AV + flight DAL158
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
AMDAR = Aircraft Meteorological Data Relay SAEZ - MDPC
CFD = Centralized Fault Data
FLCN = Functional Logistic Control Number
FMC = Flight Management Computer
FMS = Flight Management System
• 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

21997.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft PK-GMR + PR-TYI + PR-TYN + flight GLG 163 + VIR155
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
Flybondi's LV-KEH - used for domestic hops -
continues to use the PK-GMR callsign of that Boeing 737-800
leased from UMB Bank in Kansas City MO
("United Missouri Bancshares"), United States of America
since they did not update their avionics ...
RS message seems to be some approach data downlink
(heading towards SBTE)
or some non-standard ULD cargo configuration ...
CFB = Centralized Fault Book
CCV = Centro Control Vuelos
WN = Warning Number, followed by the Date-Time Group

518.0 kHz EQI Abbas Radio, Iran

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

8977.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft A7-ANK + CS-TSI + G-TTNJ + flight CCA841
FST = Fuel Status LFSB - EGLL
The fourth group is the FOB
The last four figures is the time in hours and minutes
DT = Destination, followed by the runway 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
• 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

8977.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft A7-ANK + B-LXI + CN-RHB + EC-OND + G-TTNJ + flight MNB602
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
CTOT = Calculated Take-Off Time (used for slot allocation)
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

8977.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft CN-RGF + CN-RHB + G-VEII + G-VEYR + 7T-VJV + flight UAE3MX
AA = Arrival Airport
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
DA = Departure Airport
EEC = Electronic Engine Controller
FLR = Failure
FPN = Flight Plan Report downlink
FR = Fault Report, followed by the Date-Time Group
HPV = High Pressure Valve
WN = Warning Number, followed by the Date-Time Group
• 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

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

8936.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft N583UP + 9V-SHC + 9V-SJE + 9V-SMG + flight DAL166
AGM = Miscellaneous Air/Ground Message
TTO = Target Time Over
• 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

11312.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + aircraft AP-BPG + EI-KGD + HL8258 + RPC8612 + RPC9933 + XA-VVD + 9V-SHF + flight CES218
Code figures for VHHH runways braking action - see e.g. here
ATSU = Air Traffic Service Unit
CFB = Centralized Fault Book
ECU = Electronic Control Unit
EIU = Engine Interface Unit
FADEC = Full Authority Digital Engine Control
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
MMR = Multi-Mode Receiver
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

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

518.0 kHz SUZ Serapeum Radio, Egypt
ADES = Advanced Energy Systems
ADMARINE = Jackup Rig operated by ADES
BA = British Admiralty

11387.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft CN-RHB + D-AIAA + N36962 + flight RYR92J
Loadsheet for a EDDF - EDDH domestic hop ... via New York!
ZFW + TOF = TOW - TIF = LAW + UNDLD = MAX
BI = Basic Index
BW = Basic Weight
DOI = Dry Operating Index
DOW = Dry Operating Weight
LITOW = Loaded Index at TOW
LIZFW = Loaded Index at ZFW
MAC... = Mean Aerodynamic Chord ...
QX = CYQX = Gander
SI = Supplementary Information
TOMAC = Take-Off Mean Aerodynamic Chord
ZFMAC = Zero Fuel Mean Aerodynamic Chord
• 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

21955.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft CN-ROH + EC-OCG + EP-MMG + G-GATU + TU-TSY + flight HY9657
AGM = Miscellaneous Air/Ground Message
• Engine Cruise Report DIAP - DNAA ...
= 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
• Aircraft in-flight 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 ...

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

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft B-58501 + N438AM + N965AM + XA-DUR + 9V-SGF + 9V-SJH + flight UAL61
MMMY - RJAA and MMMY - RKSI cruise data ...
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 Book
• Engine Cruise Report PANC - MMSM ...
= 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
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...
• 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

17967.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft A6-AED + A6-EIA + A6-XWG + EI-KBG + EI-KGK + LY-HMD + TC-MCO + flight CES657 + QTR42C
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
TLSOP = XML-formatted Airbus A350 enroute failure report directly to Toulouse in France
AGM = Miscellaneous Air/Ground Message
CDP = Computer Diagnostics Program
CFB = Centralized Fault Book
DFD = Digital Flight Data
ECAM = Electronic Centralized Aircraft Monitoring
EDP = Engine Display Panel
DSPTCH = WP/ETO/FOB/FL
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
FWS = Flight Warning System
MMR = Multi-Mode Receiver
PHC = Probe Heat Computer
SDAC = System Data Acquisition Control

518.0 kHz Parangipettai Radio, India
IMD = India Meteorological Department

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

518.0 kHz Vakalpudi Radio, India
IMD = India Meteorological Department

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 1320 UTC ...
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!!!

518.0 kHz Grindavik Radio, Iceland

518.0 kHz ESA Tallinn Radio, Estonia

518.0 kHz GNI Niton Radio, United Kingdom

7433.5 kHz HLL5 Soul Meteo, South Korea

11348.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft A7-ANJ + CN-RGB + CN-ROH + HL8389 + N628UP + flight AT960U
AGM = Miscellaneous Air/Ground Message
CCO = Operations Control Centre
• 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

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft B-2077 + CS-TSI + EC-MCU + F-HTYS + G-VDOT + N897FD + 9H-NEE + flight UAL423
TRIP + CONT + ALTN + HOLD = MIN RQD
AGM = Miscellaneous Air/Ground Message
AOC = Airline Operations Control
RSCD = Runway Surface Condition
TI2 = Terminal Information Request
• 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

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft A7-ANA + D-AIAB + D-AVXM + D-AXGE + F-WWBX + HZ-NS34 + HZ-NS42 + N886FD + OH-LWN + flight CES213
D-AVXM is an Airbus A321-252NX on Hamburg test flights, to become B-32LE for Air China ...
Seems they requested SA KLAX just for fun ;-)
F-WWBX is an Airbus A320-217N on Toulouse test flights, to become EI-KFI for Fly Arystan ...
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
CTOT = Calculated Take-Off Time (used for slot allocation)
DFB = Digital Flight Book
WN = Warning Number, followed by the Date-Time Group
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
• 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

8927.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-32LX + B-1057 + B-6331 + N360HA + 9V-SGG + 9V-SJE + flight CSN803
Code figures for WSSS runways braking action - see e.g. here
RSCD = Runway Surface Condition
RWYCC = Runway Condition Code
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
• 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

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

518.0 kHz JGC Yokohama Radio, Japan

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 Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

8658.0 kHz JFX Kagoshima Fisheries Radio, Japan
The date reads 7 7 30 = 2025 July 30
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

15025.0 kHz H03 HFDL Reykjavik Air, Iceland, + aircraft B-1282 + CN-RGC + CN-ROY + EC-NCY + HL8389 + N631UP + 7T-VJC + 7T-VJY + flight VIR250
AGM = Miscellaneous Air/Ground Message
BJR = Bonjour
CCO = Operations Control Centre
CDB = Commandant Du Bord
CFB = Centralized Fault Book
DT = Destination, followed by the runway number
ECS = Environmental Control System
FLR = Failure
FN = Flight Number
FR = Fault Report, followed by the Date-Time Group
TS = Time Stamp
VSC = Vacuum System Controller
• Engine Cruise Report LFPG - DAAG ...
= 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
• Aircraft in-flight 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

8927.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-308Z + B-18916 + HL7211 + HL8259 + JA818P + 9V-SCT + 9V-SGD + 9V-SKN + flight UPS56
AGM = Miscellaneous Air/Ground Message
CFD = Centralized Fault Data
DT = Destination
FN = Flight Number
REQPRG = Request Flight Progress Report
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
• 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

8927.0 kHz H16 HFDL Barrigada Air, Guam, + flight CES550 + FDX14

8927.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-32LA + B-308X + B-6333 + JA13KZ + RPC8610 + 9V-SGD + 9V-SHT + flight ANA966
LID = Landing Information Delivery
PD = Profile Descent
PDC = Pre-Departure Clearance
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

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

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft HS-THU + flight AIC847
• 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

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-308L + B-325F + B-2298 + B-6009 + B-8576 + JA383A + VN-A508 + 9V-SGF + 9V-SMV + flight ACA9
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
NRTOPS = Narita Operations Centre
TDZ = Touchdown Zone
TI2 = Terminal Information Request
WN = Warning Number, followed by the Date-Time Group
• 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

9165.0 kHz HLL Soul Meteo, South Korea

9165.0 kHz HLL Soul Meteo, South Korea

Tropical Cyclone KROSA ...

10030.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft AP-BPF + A6-EIW + HZ-NS35 + HZ-NS38 + N828CA + 4R-ABT + 9N-ALM + flight NWS104 + UAE319
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
AFS = Auto Flight System
CFB = Centralized Fault Book
DA = Departure Airport
DM = Time Stamp
DS = Destination Airport
DT = Destination
EIS = Electronic Instrument System
FLR = Failure
FMGC = Flight Management and Guidance Computer
FN = Flight Number
FR = Fault Report, followed by the Date-Time Group
IR = Inertial Reference
RTOK = Re-Test Okay
WN = Warning Number, followed by the Date-Time Group
• 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
• 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

8677.0 kHz CBV Valparaiso Radio, Chile

8677.0 kHz CBV Valparaiso Radio, Chile
GFS = Global Forecast System

6559.0 kHz H01 HFDL San Francisco Air CA, United States of America, + aircraft B-1266 + N620FE + flight UPS80
AGM = Miscellaneous Air/Ground Message
AOC = Airline Operations Control
M/C = Magnetic Course
T/C = True Course
T/H = True Heading
ZND = Zone Distance (between checkpoints)
ZNT = Zone Time (between checkpoints)
• 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

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

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

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

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-1242 + B-18905 + HL7625 + JA204P + N966AM + flight ANA968 + UAL28
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
A NOTAM decoder can be found e.g. here
MMMY - RJAA cruise data ...
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 Book
• 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

4210.0 (not 4209.5!) kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

11090.0 kHz KVM70 Honolulu Meteo, Hawaii

518.0 kHz 4XO Haifa Radio, Israel
IMOT = Israel Ministry of Transport and Road Safety
NTM = Notice to Mariners

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft B-5961 + B-18910 + flight CCA981 + CES878
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
Enroute weather NZAA - ZSHC ...
DFB = Digital Flight Book
DT = Destination
FN = Flight Number
REQPRG = Request Flight Progress Report
TPEOD = Taipei Operational Department
VA = Volcanic Ash

13312.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft B-20A2 + ET-ASG + N118FE + S2-AJT + UK32021 + 5Y-KCB + flight QTR9C
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
CRU = Card Reader Unit
DB = Dash Board
EOR = End of Report
FDE = Fault Detection and Exclusion
FRC = Fault Reporting Code
FSM = Flight System Message
ICS = Internal Communication System
INR = Integrated Navigation Receiver
NCMM = Network Channel Management Monitor
PACK = Pressurization Air Conditioning Kit
TI2 = Terminal Information Request
WELS = Wireless Emergency Lighting System

518.0 kHz XSQ Guangzhou Radio, China
MSA = Maritime Safety Administration
SLM = Sinarmas LDA Maritime

4209.5 kHz XVN Nha Trang Radio, Viet Nam

16830.5 kHz SVO Olympia Radio, Athens, Greece

4272.8 kHz FUJ French Navy Noumea, New Caledonia
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

518.0 kHz CBV Valparaiso Radio, Chile

5655.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-18909 + JA815A + N122FE + N847FD + TC-LGS + VN-A515 + 9V-SGE + 9V-SHA + flight SIA851
OMDW - WSSS cruise data ...
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
• 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

5655.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-MCB + B-MBT + N122FE + N847FD + N882FD + TC-LGS + VN-A513 + flight CPA631
AGM = Miscellaneous Air/Ground Message
• 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 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

5655.0 kHz H06 HFDL Hat Yai Air, Thailand, + flight CES857 + FX5960

12579.0 kHz UAT Moscow Radio, Russian Federation

9165.0 kHz HLL Soul Meteo, South Korea

8912.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft JY-BAG + XA-VVD + flight CHH792 + UZB101
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

518.0 kHz L2G Argentinian Coast Guard Buenos Aires, Argentina

518.0 kHz L2T Argentinian Coast Guard Mar del Plata, Argentina

5655.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft JA808A + N726NK + 9V-SCC + 9V-SCQ + 9V-SHJ + 9V-SMQ + 9V-SMR + flight CSZ952
OCCS = Operations Control Centre Singapore
TI2 = Terminal Information Request
• 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

8912.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft CN-RHB + N236NV + N726NK + N783AM + YR-KID + flight TAM816
LEMD - MMMY cruise data ...
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 Book
MDPWI = Meteorological Data - Predicted Wind for FL 310 330 350 370
REQPWI = Predicted Wind Request for FL 390 370 350 310
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

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

5100.0 kHz VMC Charleville Meteo QLD, Australia

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!

17916.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft B-32CE + B-6335 + flight AZU446
Solar cycle maximum - and the ionosphere going crazy:
METAR uplink for a ZSPD - EGKK trans-continental flight ... via Santa Cruz!
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

11312.0 kHz H02 HFDL Hoolehua Air, Molokai, Hawaii, + flight AC0006

518.0 kHz 9AS Split Radio, Croatia

518.0 kHz GPK Portpatrick Radio, United Kingdom

490.0 kHz OST Oostende Radio, Belgium

8912.0 kHz H04 HFDL Riverhead Air NY, United States of America, + flight AVA227 + FX0416

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

518.0 kHz Veraval Radio, India
IMD = India Meteorological Department
INW = Indian Navigational Warning

518.0 kHz Don Sak Radio, Thailand
005671060 is the station's MMSI (Maritime Mobile Service Identity) code
Totally outdated meteorological warnings of several months ago ...
Alamak! Tak boleh tahan lah!
See 5 AUG 2021 NAVTEX Panel Report

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-MCF + B-306Y + B-6323 + JA895A + N623UP + 9V-SHJ + flight CES225 + HVN321
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
TLSOP = Airbus A350 enroute parameters report directly to Toulouse in France
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
DFB = Digital Flight Book
DFD = Digital Flight Data
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
FWS = Flight Warning System
LRRA = Low-Range Radio Altimeter
RA = Radio Altimeter
WXR = Weather Radar
• Engine Cruise Report ZUTF - ZLGY ...
= 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
• Aircraft in-flight 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

7795.0 kHz JMH2 Tokyo Meteo, Japan

10084.0 kHz H05 HFDL Auckland Air, New Zealand, + aircraft HL7616 + N527DN + N615UP + RA73680 + RPC8786 + 9V-SMY + flight CPA163
AGM = Miscellaneous Air/Ground Message
FMS = Flight Management System
MTC = Maintenance Technical Center
RESPWI/AC = FMS downlink acceptance and insertion of PWI = Predicted Wind uplink data
RESPWI/AK = FMS downlink acknowledgement of PWI = Predicted Wind uplink data
• 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-303F + B-320N + B-8861 + HL7211 + JA213P + JA809A + JA902P + N507DN + flight TAX606
DT = Destination
FMC = Flight Management Computer
FMS = Flight Management System
FN = Flight Number
REQPRG = Request Flight Progress Report
TI2 = Terminal Information Request

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft A7-AML + CN-RHB + EC-MCU + TC-LGL + flight AIC111 + AT810D
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
TI2 = Terminal Information Request
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

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft A7-AML + CS-TSM + G-NEOT + N625UP + N742AM + OE-LZC + XA-ADD + flight VLG93N
MMMX - LFPG and MMMX - LEMD cruise data ...
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 Book
DT = Destination, followed by the runway number
HOC = Hub Operation Centre
PDL = Ponta Delgada
• 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
• 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

8416.5 kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

486.0 kHz XSG Shanghai Radio, China
Chinese teleprinter code after Latin alphabet header
AIZAIZAIZAIZ corresponds to NNNN
Presumably local time used here since received at 1640 UTC ...
According to this NAVAREA 11 document, XSG uses indeed
transmitter identification character Q on both 518 and 486 kHz

518.0 kHz 9MG Georgetown Radio, Pinang Island, Malaysia

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

4209.5 kHz XVG Hai Phong Radio, Viet Nam
Seal read soul - pretty good translation via Google anyway ...
Warnings still in force - received 251800Z APR 2024

21982.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft EI-KGA + G-NEOU + N582UP + VT-ANE + 9V-SMK + flight AFL214
ADC = Air Defence Clearance
ADIRU = Air Data Inertial Reference Unit
CFB = Centralized Fault Book
ETO = Estimated Time of Overfly
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
LITOW = Loaded Index at TOW
LIZFW = Loaded Index at ZFW
MAC... = Mean Aerodynamic Chord ...
OCCS = Operations Control Centre Singapore
TCAS = Traffic Alert and Collision Avoidance System
• 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

13988.5 kHz JMH4 Tokyo Meteo, Japan

13988.5 kHz JMH4 Tokyo Meteo, Japan

5100.0 kHz VMC Charleville Meteo QLD, Australia
SWF = Shortwave Fadeout

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

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft EP-IJA + LY-NVG + N616UP + UK33021 + YR-KID + flight UAL760
Perfect OOOI ...
BMC = Bleed Monitoring Computer
CFB = Centralized Fault Book
DMC = Display Management Computer
FDB = Floor Disconnect Box
FDP = Flight Duty Period
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
MMR = Multi-Mode Receiver
PES = Passenger Entertainment System
WN = Warning Number, followed by the Date-Time Group
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
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

8942.0 kHz H07 HFDL Shannon Air, Ireland, + flight KQA117 + QTR9G

6646.0 kHz H09 HFDL Barrow Air, Alaska, + flight CAL021

4209.5 kHz TAH Istanbul Radio, Turkey

4209.5 kHz SVH Iraklion Radio, Greece

16976.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

8106.9 kHz SWA Athens Meteo, Greece

8424.0 kHz SVO Olympia Radio, Athens, Greece

4610.0 kHz GYA Royal Navy London, United Kingdom

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

518.0 kHz XYM Myeik Radio, Myanmar

518.0 kHz PKX Jakarta Radio, Indonesia

21997.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft CC-BDC + N856GT + ZS-SXJ + flight IBE685
KMIA - SBEG cruise parameters ...
CFB = Centralized Fault Book
ECS = Environmental Control System
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
• Engine Cruise Report FACT - SBGR ...
= 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
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-30CY + B-30DT + B-300D + B-2415 + B-6006 + B-18919 + JA220A + flight ANA67 + CES5464
ADIRU = Air Data Inertial Reference Unit
AFS = Auto Flight System
AI = Arrival Information
CFB = Centralized Fault Book
DI = Departure Information
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
GC = Ground Connections
LID = Landing Information Delivery
PD = Profile Descent
PDC = Pre-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

17958.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-325M + B-2412 + B-6011 + B-8325 + B-8653 + JA207P + flight CCA135 + CES519
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
Enroute weather ZUCK - ZSNB and ZGHA - ZSCG ...
AGM = Miscellaneous Air/Ground Message
DFB = Digital Flight Book
LGTP = Light Plus Turbulence = relatively greater intensity

8425.5 kHz XSG Shanghai Radio, China
Characters in brackets denote the Latin alphabet
The four-figure groups without brackets
are Chinese ideographs
Presumably local time used here since received at 1350 UTC ...

11086.5 kHz GYA Royal Navy London, United Kingdom

20268.0 kHz Digital data station

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

9982.5 kHz KVM70 Honolulu Meteo, Hawaii
Transmission cut off ...
NCEP = National Centers for Environmental Prediction
NHC = National Hurricane Center
OPC = Ocean Prediction Center
WPC = Weather Prediction Center

518.0 kHz Gislovshammar Radio, Sweden

518.0 kHz GCC Cullercoats Radio, United Kingdom
ANMB = Admiralty Notices to Mariners Bulletin

518.0 kHz PBK Netherlands Coast Guard Ijmuiden, Netherlands
EEZ = Exclusive Economic Zone

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

8942.0 kHz H07 HFDL Shannon Air, Ireland, + aircraft B-307A enroute ZSPD - EDFF
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
ADIRU = Air Data Inertial Reference Unit
AESS = Aircraft Environment Surveillance System
CMS = Cabin Management System
ISIS = Integrated Standby Instrument System
MIAM = Media Independent Aircraft Message
MSN = Manufacturer's Serial Number
PDU = Pilot Display Unit
RTR = Real-Time Report

17916.0 kHz H13 HFDL Santa Cruz Air, Bolivia, + aircraft EC-ODP + HL8701 + JA811A + XA-AMX + XA-MFG + flight LRC626
EC-ODP is a daily shuttle service SCEL - SKBO - SCEL
by Wamos Air on wet lease for LATAM Airlines ...
MMMX - SBGR and RJAA - MMMX cruise data ...
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 Book
LDA = Landing Distance Available = treshold to treshold = TORA plus the treshold displacement
PBB = Passenger Boarding Bridge
PMS = Pavement Management System
TORA = Take Off Run Available
VDGS = Visual Docking Guidance System
• Engine Cruise Report SCEL - 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
• Aircraft in-flight performance parameters such as OIT = Oil Temperature are explained e.g. here
• The yellow table below shows a typical parameters list ...

13988.5 kHz JMH4 Tokyo Meteo, Japan

12579.0 kHz UAT Moscow Radio, Russian Federation
Ostrov = Island
Zaliv = Bay

9165.0 kHz HLL Soul Meteo, South Korea

9165.0 kHz HLL Soul Meteo, South Korea

490.0 kHz UWT Taganrog Radio, Russian Federation
Warnings still in force - received 021850Z APR 2025

518.0 kHz HZH Jeddah Radio, Saudi Arabia

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

17615.0 kHz RCV Commonwealth of Independent States Navy Sevastopol', Ukraine

22448.8 kHz FUV French Navy Jibuti, Djibouti
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

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

6825.0 kHz French Army Mont-Valerien, France

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

17967.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft A6-EUX + EI-KDC + HZ-NS76 + flight THY7GT
Airbus' XML failure report system ...
TLSOP = Airbus A380 enroute parameters report directly to Toulouse in France
POSREP = POS, WP, ATO, FL, next+1 WP, ETO, next+2 WP,
ETO, temperature, wind, FOB or SOG, time stamp, date, HEX serial
CFB = Centralized Fault Book
CMS = Cabin Management System
DT = Destination, followed by the runway number
FN = Flight Number
SDU = Satellite Data Unit
TI2 = Terminal Information Request
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

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

518.0 kHz Balasore Radio, India
IAF = Indian Air Force
IMD = India Meteorological Department
INW = Indian Navigational Warning

21982.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft EI-KFD + EI-KGE + ER00007 + 9M-MAH + 9V-SHH + flight KAL955
ADIRU = Air Data Inertial Reference Unit
AI = Arrival Information
CPC = Cabin Pressure Controller
DA = Departure Airport
DI = Departure Information
DM = Time Stamp
DS = Destination Airport
DT = Destination
ECAM = Electronic Centralized Aircraft Monitoring
FN = Flight Number
FR = Fault Report, followed by the Date-Time Group
FWC = Flight Warning Computer
GC = Ground Connections
GPSSU = Global Positioning System Sensor Unit
IR = Inertial Reference
MDPWI = Meteorological Data - Predicted Wind for FL 320 330 350
MMR = Multi-Mode Receiver
REQPWI = Predicted Wind Request for FL 360
WN = Warning Number, followed by the Date-Time Group
• 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 CBP Puerto Montt Radio, Chile
R/V = Research Vessel

518.0 kHz SUK Quseir Radio, Egypt
BA = British Admiralty
EGPC = Egyptian General Petroleum Company
GAPCO = Gulf Africa Petroleum Corporation
GUPCO = Gulf of Suez Petroleum Company

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

518.0 kHz XSL Fuzhou Radio, China
MSA = Maritime Safety Administration
According to this NAVAREA 11 document, XSL uses indeed
transmitter identification character O on both 518 and 486 kHz

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

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

518.0 kHz 3BM Port Louis Radio, Mauritius
ITCZ = Inter-Tropical Convergence Zone
TOO = Time of Observation

11354.0 kHz H09 HFDL Barrow Air, Alaska, + aircraft HL8389 + HS-VKE + N782AM + N965AM + N891FD + 9V-SMN + flight ACA79 + AC0072
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
RJAA - MMMX cruise data ...
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
DB = Dash Board
DFB = Digital Flight Book
FDE = Fault Detection and Exclusion
FRC = Fault Reporting Code
GPM = General Processing Module
PDHM = Prognostic and Diagnostic Health Monitor
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
• 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

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

518.0 kHz Chukpy Radio, South Korea
Warnings still in force - received 191530Z MAR 2025
JCS = Joint Chiefs of Staff

4209.5 kHz XVG Hai Phong Radio, Viet Nam
If diacritics are not attributed correctly, the AI translation is somewhat "bombed" ...

6450.0 kHz PWZ Brazilian Navy Rio de Janeiro, Brazil

518.0 kHz LGQ Rogaland Radio, Norway

9165.0 kHz HLL Soul Meteo, South Korea
GK2A = GEO KOMP 2A = Geostationary Korea Multi Purpose Satellite
KMA = Korea Meteorological Administration

6652.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft 9V-SGG + flight ACA35 + CCA406
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
TTO = Target Time Over

11030.0 kHz VMC Charleville Meteo QLD, Australia

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

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

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 JNB Naha Radio, Okinawa Island, Japan

518.0 kHz LGP Bodoe Radio, Norway

518.0 kHz JNR Moji Radio, Japan

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

518.0 kHz SVH Iraklion Radio, Greece
Warnings still in force - received 100110Z MAR 2025

518.0 kHz 3VL Kelibia Radio, Tunisia
MPSV = Multi-Purpose Supply Vessel

10060.0 kHz H10 HFDL Muan Air, South Korea, + aircraft B-32AL enroute ZBAA - YMML
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

10060.0 kHz H10 HFDL Muan Air, South Korea, + flight CES780 + CES895

5100.0 kHz VMC Charleville Meteo QLD, Australia

5100.0 kHz VMC Charleville Meteo QLD, Australia

17967.0 kHz H15 HFDL Muhurroq Air, Bahrain, + aircraft OH-LWI enroute VTBS - EFHK
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
ADIRU = Air Data Inertial Reference Unit
AESS = Aircraft Environment Surveillance System
CMS = Cabin Management System
MIAM = Media Independent Aircraft Message
MSN = Manufacturer's Serial Number
PDU = Pilot Display Unit
RTR = Real-Time Report

13074.0 kHz JFC Misaki Fisheries Radio, Japan
JAFIC = Japan Fisheries Information Service Center
The date reads 7 3 7 = 2025 March 7
since the Japanese calendar year in the Reiwa Era is used here
Formula: Reiwa year + 2018 = Gregorian year

490.0 kHz IGS Piombino Radio, Italy
VTS = Vessel Traffic Service

490.0 kHz Centre Regional Operationnel de Surveillance et de Sauvetage Toulon, France

12860.3 kHz NYBM Digital data station

21955.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft ET-AUB + F-HRBJ + G-VLDY + flight DAL200
Airbus' XML failure report system ...
AA = Arrival Airport
AP = Approach type and runway number
CFB = Centralized Fault Book
CMS = Cabin Management System
CPCS = Cabin Pressure Control System
DA = Departure Airport
FPN = Flight Plan Report downlink
MSN = Manufacturer's Serial Number
OFV = Outflow Valve
RTR = Real-Time Report
AFN = ATS Facilities Notification (ATS = Air Traffic Service)y
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

21955.0 kHz H17 HFDL Telde Air, Canary Islands, + aircraft A7-ANM + PR-TYI + PR-TYQ + 9V-SMV + flight AFR264
CFB = Centralized Fault Book
DA = Departure Airport
DFB = Digital Flight Book
DM = Time Stamp
DS = Destination Airport
FMS = Flight Management System
MDPWI = Meteorological Data - Predicted Wind for FL 360 340 320 300
REQPER = Request Performance Report
RESPWI/AK = FMS downlink acknowledgement of PWI = Predicted Wind uplink data
RSCD = Runway Surface Condition
TI2 = Terminal Information Request
WN = Warning Number, followed by the Date-Time Group
AFN = ATS Facilities Notification (ATS = Air Traffic Service)
FAK = Facilities Acknowledgement Message
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

13988.5 kHz JMH4 Tokyo Meteo, Japan

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

518.0 kHz NMN United States Coast Guard Norfolk VA, United States of America
BNM = Broadcast Notice to Mariners
HAZOPS = Hazardous Operations
MCM = Mine Countermeasures Ships

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-MBO + HS-XTG + HS-XTH + JA804A + VT-IAO + 9V-SMK + flight ETH685
ACMF = Aircraft Condition Monitoring Function
ADF = Automatic Direction Finder
AGM = Miscellaneous Air/Ground Message
CFB = Centralized Fault Book
DFB = Digital Flight Book
DMC = Display Management Computer
ECB = Environmental Control Board
FCMC = Fuel Control and Monitoring Computer
FLR = Failure
FR = Fault Report, followed by the Date-Time Group
PSCU = Proximity Switch Control Unit
WN = Warning Number, followed by the Date-Time Group
• 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

4346.0 kHz NMC United States Coast Guard San Francisco CA, United States of America
NCEP = National Centers for Environmental Prediction

4346.0 kHz NMC United States Coast Guard San Francisco CA, United States of America
NCEP = National Centers for Environmental Prediction
NHC = National Hurricane Center

518.0 kHz NMW United States Coast Guard Astoria OR, United States of America
BNM = Broadcast Notice to Mariners
LA = Los Angeles
LB = Long Beach
LLNR = Light List Number
LT = Light
MRASS = Mariner Radio Activated Sound Signal

518.0 kHz VAU Canadian Coast Guard Chebogue NS, Canada

518.0 kHz UFL Vladivostok Radio SE, Russian Federation

21931.0 kHz H04 HFDL Riverhead Air NY, United States of America, + aircraft G-VLUX enroute EGLL - KLAX
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

518.0 kHz JNX Kushiro Radio, Japan
LL = Light List

4210.0 (not 4209.5!) kHz L2C Argentinian Coast Guard Buenos Aires, Argentina

518.0 kHz Bjuroklubb Radio, Sweden
TSS = Traffic Separation Scheme

11306.0 kHz H16 HFDL Barrigada Air, Guam, + aircraft B-5918 + flight C PA828
AGM = Miscellaneous Air/Ground Message
BT = Brake Temperature
DFB = Digital Flight Book
FQLI = Fuel Quantity Inner Left Tank
FQLO = Fuel Quantity Outer Left Tank
FQRI = Fuel Quantity Inner Right Tank
FQRO = Fuel Quantity Outer Right Tank
FQTT = Fuel Quantity Total
HPP = High Pressure Pump
LPP = Low Pressure Pump
MDPWI = Meteorological Data - Predicted Wind for FL 380
REQPWI = Predicted Wind Request for FL 380
OIP = Oil Pressure
OIQ = Oil Quantity
OIT = Oil Temperature
TIP = Tire Pressure

4500.0 kHz Digital data station

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

15626.0 kHz Digital data station

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

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 ZBM Hamilton Harbour Radio, Bermuda

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

10451.8 kHz Digital data station

11030.0 kHz VMC Charleville Meteo QLD, Australia

518.0 kHz EJM Irish Coast Guard Malin Head, Ireland

9982.5 kHz KVM70 Honolulu Meteo, Hawaii

9982.5 kHz KVM70 Honolulu Meteo, Hawaii

518.0 kHz XSZ Dalian Radio, China
MSA = Maritime Safety Administration

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

4209.5 kHz XVN Nha Trang Radio, Viet Nam
Warnings still in force - received 030420Z FEB 2025

17151.2 kHz NMC United States Coast Guard San Francisco CA, United States of America
NCEP = National Centers for Environmental Prediction

17151.2.0 kHz NMC United States Coast Guard San Francisco CA, United States of America
NCEP = National Centers for Environmental Prediction

17151.2 kHz NMC United States Coast Guard San Francisco CA, United States of America
GFS = Global Forecast System
NCEP = National Centers for Environmental Prediction

17151.2 kHz NMC United States Coast Guard San Francisco CA, United States of America
GFS = Global Forecast System
NCEP = National Centers for Environmental Prediction

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

518.0 kHz OXF Simiutaq Radio, Greenland

518.0 kHz VCF Canadian Coast Guard Moisie QUE, Canada

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

518.0 VCO Canadian Coast Guard Port Caledonia NS, Canada

518.0 kHz NMR United States Coast Guard San Juan, Puerto Rico
BNM = Broadcast Notice to Mariners
LA = Los Angeles
LB = Long Beach

8439.0 kHz PBB Dutch Navy Den Helder, Netherlands

518.0 kHz VOK Canadian Coast Guard Cartwright NFLD, Canada

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

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

8424.0 kHz SVO Olympia Radio, Athens, Greece

490.0 kHz TAN Izmir Radio, Turkey

13270.0 kHz H06 HFDL Hat Yai Air, Thailand, + aircraft B-LRF enroute VHHH - VIDP
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
FDE = Fault Detection and Exclusion
GLS = GBAS (Ground-Based Augmentation System) Landing System
MIAM = Media Independent Aircraft Message
MSN = Manufacturer's Serial Number
PDU = Pilot Display Unit
RTR = Real-Time Report

5720.0 kHz H03 HFDL Reykjavik Air, Iceland, + flight FX5201 + MS0080

490.0 kHz TAL Antalya Radio, Turkey

7396.9 kHz HSW64 Bangkok Meteo, Thailand

7396.9 kHz HSW64 Bangkok Meteo, Thailand

8416.5 kHz NMC United States Coast Guard San Francisco CA, United States of America
APT = Automatic Picture Transmission

518.0 kHz VAE Canadian Coast Guard Tofino BC, Canada

518.0 kHz XVT Da Nang Radio, Viet Nam
AIS = Automatic Identification System

518.0 kHz EQM Bushire Radio, Iran

518.0 kHz EAR La Coruna Radio, Spain

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

13351.0 kHz H05 HFDL Auckland Air, New Zealand, + flight AIC220

518.0 kHz UFO Kholmsk Radio FE, Russian Federation
Proliv = Strait
Zaliv = Bay

2610.2 kHz FUO French Navy Toulon, France
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

16953.3 kHz 6WW French Navy Dakar, Senegal

10093.0 kHz H09 HFDL Barrow Air, Alaska, + aircraft HL8387 + HL8701 + N846FD + PS-LAA
PACD is an ETOPS emergency alternate airport
for trans-Pacific flights with RWY 15/33 = 3103 metres ...
AGM = Miscellaneous Air/Ground Message
CFD = Centralized Fault Data
OCC = Operations Control Centre
• The airspace volume around an aircraft is defined
as a horizontal shape with a floor and ceiling height
• 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 OXJ Torshavn Radio, Faroe Islands, Denmark
DMI = Danish Meteorological Institute

518.0 kHz Santa Marta Radio, Colombia

9110.0 kHz NMF United States Coast Guard Boston MA, United States of America

9110.0 kHz NMF United States Coast Guard Boston MA, United States of America
NCEP = National Centers for Environmental Prediction
NHC = National Hurricane Center
OPC = Ocean Prediction Center
WPC = Weather Prediction Center

518.0 kHz UGE Arkhangelsk Radio, Russian Federation
Zaliv = Bay

518.0 kHz LZW Varna Radio, Bulgaria

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

518.0 kHz Grimeton Radio, Sweden

8416.5 kHz LGS Svalbard Radio, Spitsbergen, Norway
002570000 is the station's MMSI (Maritime Mobile Service Identity) code

8431.0 kHz TAH Istanbul Radio, Turkey

518.0 kHz UHY Murmansk Radio, Russian Federation

518.0 kHz ZSC Cape Town Radio, South Africa (Republic of)
ZSJ has been ZAN for many years now ...
SAN = South African Navy

518.0 kHz UUI Odessa Radio, Ukraine

518.0 kHz EAL Las Palmas Radio, Canary Islands

518.0 kHz ZSQ Port Elizabeth Radio, South Africa (Republic of)
ZSJ has been ZAN (QRT ...) for many years now ...
SAN = South African Navy

4209.5 kHz XVN Nha Trang Radio, Viet Nam

518.0 kHz 9HD Valetta Radio, Malta
NTM = Notice to Mariners
SOLAS = Safety of Life at Sea
TM = Tele Malta

518.0 kHz XSI Sanya Radio, China
STS = Severe Tropical Storm

518.0 kHz United States Coast Guard Savannah GA, United States of America
BNM = Broadcast Notice to Mariners

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

16971.0 kHz JJC Kyodo Tsushin Tokyo, Japan

518.0 kHz Famagusta (?) Radio, Cyprus
This strange new broadcast seems to originate from the Turkish-occupied territory of Cyprus ...
Anyway, time slot E is assigned to Samsun Radio in Turkey

16067.7 kHz Ministry of Foreign Affairs Cairo, Egypt
A specially formatted sample Klingenfuss frequency database
is perfectly integrated in the go2MONITOR GUI

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 2025 edition of our Perseus Frequency Database
now shows utility stations' callsigns as well!

8454.8 kHz FUG French Navy Saissac, France
New 2025 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