| Message
Label
| Direction
|
Description
|
| :; |
UP |
Data Transceiver Auto-Tune |
| _j |
N/A |
Reserved |
| _DEL |
UP/DN |
General Response (Demand Mode) |
| 00 |
DN |
Emergency Situation Report (Aircraft |
| 51 |
DN |
Ground GMT Request |
| 51 |
UP |
Ground GMT Report |
| 52 |
DN |
Ground UTC Request |
| 52 |
UP |
Ground UTC Report |
| 54 |
DN |
Voice Contact Request (Ground Party Address) |
| 54 |
UP |
Voice Go-ahead (or ACARS Frequency Uplink) |
| 57 |
DN |
Alternate Aircrew Initiated Position |
| 5D |
DN |
ATIS Request |
| 5P |
DN |
Temporary Suspension |
| 5R |
DN |
Aircrew Initiated Position Report |
| 5U |
DN |
Weather Request |
| 5Y |
DN |
Aircrew Revision to Previous |
| 5Z |
DN |
Airline Designated Downlink |
| 7A |
DN |
Aircrew Initiated Engine Data/Takeoff |
| 7B |
DN |
Aircrew Entered Miscellaneous Message |
| 80 |
DN |
Airline Defined Message |
| 81 |
DN |
Airline Defined Message |
| 82 |
DN |
Airline Defined Message |
| 83 |
DN |
Airline Defined Message |
| 84 |
DN |
Airline Defined Message |
| 85 |
DN |
Airline Defined Message |
| 86 |
DN |
Airline Defined Message |
| 87 |
DN |
Airline Defined Message |
| 88 |
DN |
Airline Defined Message |
| 89 |
DN |
Airline Defined Message |
| 8~ |
DN |
Airline Defined Message |
| A1 |
UP |
Oceanic Clearance |
| A2 |
UP |
Unassigned |
| A3 |
UP |
Departure Clearance |
| A4 |
UP |
Flight Systems Message |
| A5 |
UP |
Unassigned |
| A6 |
UP |
Request ADS Reports |
| A7 |
UP |
Free Text from ATC |
| A8 |
UP |
Deliver Departure Slot |
| A9 |
UP |
ATIS Report |
| A0 |
UP |
ATS Facility Notification (AFN) |
| AA |
UP |
ATCCommunications |
| AB |
UP |
Terminal Weather Information for Pilots (TWIP) |
| AC |
UP |
Pushback Clearance |
| AD |
UP |
Expected Taxi Clearance |
| AE |
UP |
Unassigned |
| AF |
UP |
CPC Command Response |
| AG |
UP |
Unassigned |
| B1 |
DN |
Request Oceanic Clearance |
| B2 |
DN |
Oceanic Clearance Readback |
| B3 |
DN |
Request Departure Clearance |
| B4 |
DN |
Departure Clearance Readback Downlink |
| B5 |
DN |
Waypoint Position Report |
| B6 |
DN |
Provide ADS Report |
| B7 |
DN |
?Free Text? to ATC |
| B8 |
DN |
Request Departure Slot |
| B9 |
DN |
Request ATIS Report |
| B0 |
DN |
ATS Facility Notification (AFN) |
| BA |
DN |
ATCCommunications |
| BB |
DN |
Terminal Weather Information for Pilots |
| BC |
DN |
Pushback Clearance Request |
| BD |
DN |
Expected Taxi Clearance Request |
| BE |
DN |
CPC Log-on/Log-off Request |
| BF |
DN |
CPC WILCO/UnassignedBLE Response |
| BG |
DN |
Unassigned |
| C0 |
UP |
Undesignated Cockpit/Cabin Printer Messages, All Call |
| C1 |
UP |
Designated Cockpit/Cabin Printer Messages |
| C2 |
UP |
Designated Cockpit/Cabin Printer Messages |
| C3 |
UP |
Designated Cockpit/Cabin Printer Messages |
| C4 |
UP |
Designated Cockpit/Cabin Printer Messages |
| C5 |
UP |
Designated Cockpit/Cabin Printer Messages |
| C6 |
UP |
Designated Cockpit/Cabin Printer Messages |
| C7 |
UP |
Designated Cockpit/Cabin Printer Messages |
| C8 |
UP |
Designated Cockpit/Cabin Printer Messages |
| C9 |
UP |
Designated Cockpit/Cabin Printer Messages |
| CA |
DN |
Communication Service Message, Printer Status Annunciation - Error |
| CB |
DN |
Printer Busy |
| CC |
DN |
Printer in Local or Test Mode |
| CD |
DN |
Printer Out of Paper |
| CE |
DN |
Printer Buffer Overrun |
| CF |
DN |
Printer iInitialisation Before Completion |
| EI |
DN |
Internet E- Mail Message |
| F3 |
DN |
Dedicated Transceiver Advisory |
| H1 |
UP |
See H1 Sub Label Descriptions Below |
| H2 |
UP |
Meteorological Report Command |
| H2 |
DN |
Meteorological Report |
| H3 |
DN |
Icing Report |
| HX |
DN |
Undelivered Uplink Report |
| M2 |
DN |
User Defined Message |
| Q0 |
DN |
Link Test |
| Q1 |
DN |
Departure/Arrival Report |
| Q1 |
DN |
Arrival Report |
| Q1 |
DN |
Departure Report |
| Q2 |
DN |
Estimated Time of Arrival Report |
| Q3 |
DN |
Clock Update Advisory |
| Q4 |
UP |
Voice Circuit Busy (Not Supported) |
| Q5 |
DN |
Unable to Deliver Uplink Messages |
| Q6 |
DN |
Voice to Data Channel Changeover Advisory |
| Q7 |
DN |
Delay Message |
| QA |
DN |
OUT/Fuel Report (IATA Airport Code) |
| QB |
DN |
OFF Report (IATA Airport Code) |
| QC |
DN |
ON Report (IATA Airport Code) |
| QD |
DN |
IN/Fuel Report (IATA Airport Code) |
| QE |
DN |
OUT/Fuel/Destination Report (IATA Airport Code) |
| QF |
DN |
OFF/Destination Report (IATA Airport Code) |
| QG |
DN |
OUT/Return IN Report (IATA Airport Code) |
| QH |
DN |
OUT Report (IATA Airport Code) |
| QK |
DN |
Landing Report (IATA Airport Code) |
| QL |
DN |
Arrival Report (IATA Airport Code) |
| QM |
DN |
Arrival Information Report (IATA Airport Code) |
| QN |
DN |
Diversion Report (IATA Airport Code) |
| QP |
DN |
OUT Report (ICAO Airport Code) |
| QQ |
DN |
OFF Report (ICAO Airport Code) |
| QR |
DN |
ON Report (ICAO Airport Code) |
| QS |
DN |
IN Report (ICAO Airport Code) |
| QT |
DN |
OUT/Return IN Report (ICAO Airport Code) |
| QX |
DN |
Intercept/Unable to Process |
| RA |
UP |
Command/Response Uplink |
| RB |
DN |
Command/Response Downlink |
| S1 |
UP |
Network Statistics Report Request |
| S1 |
DN |
VHF Network Statistics Report |
| S2 |
UP |
VHF Performance Report Request |
| S2 |
DN |
VHF Performance Report |
| S3 |
UP |
LRU Configuration Report Request |
| S3 |
DN |
LRU Configuration Report |
| SA |
DN |
Media Advisory |
| SQ |
UP |
Squitter Message |
| X1 |
UP/DN |
Service Provider Defined DSP |
| 10 |
UP/DN |
Airline Defined Message |
| 11 |
UP/DN |
Airline Defined Message |
| 12 |
UP/DN |
Airline Defined Message |
| 13 |
UP/DN |
Airline Defined Message |
| 14 |
UP/DN |
Airline Defined Message |
| 15 |
UP/DN |
Airline Defined Message |
| 16 |
UP/DN |
Airline Defined Message |
| 17 |
UP/DN |
Airline Defined Message |
| 18 |
UP/DN |
Airline Defined Message |
| 19 |
UP/DN |
Airline Defined Message |
| 20 |
UP/DN |
Airline Defined Message |
| 21 |
UP/DN |
Airline Defined Message |
| 22 |
UP/DN |
Airline Defined Message |
| 23 |
UP/DN |
Airline Defined Message |
| 24 |
UP/DN |
Airline Defined Message |
| 25 |
UP/DN |
Airline Defined Message |
| 26 |
UP/DN |
Airline Defined Message |
| 27 |
UP/DN |
Airline Defined Message |
| 28 |
UP/DN |
Airline Defined Message |
| 29 |
UP/DN |
Airline Defined Message |
| 30 |
UP/DN |
Airline Defined Message |
| 31 |
UP/DN |
Airline Defined Message |
| 32 |
UP/DN |
Airline Defined Message |
| 33 |
UP/DN |
Airline Defined Message |
| 34 |
UP/DN |
Airline Defined Message |
| 35 |
UP/DN |
Airline Defined Message |
| 36 |
UP/DN |
Airline Defined Message |
| 37 |
UP/DN |
Airline Defined Message |
| 38 |
UP/DN |
Airline Defined Message |
| 39 |
UP/DN |
Airline Defined Message |
| 40 |
UP/DN |
Airline Defined Message |
| 41 |
UP/DN |
Airline Defined Message |
| 42 |
UP/DN |
Airline Defined Message |
| 43 |
UP/DN |
Airline Defined Message |
| 44 |
UP/DN |
Airline Defined Message |
| 45 |
UP/DN |
Airline Defined Message |
| 46 |
UP/DN |
Airline Defined Message |
| 47 |
UP/DN |
Airline Defined Message |
| 48 |
UP/DN |
Airline Defined Message |
| 49 |
UP/DN |
Airline Defined Message |
| 4~ |
UP/DN |
Airline Defined Message |
The H1 Message label is used for all system and engineering data.
The list below are the sources for that data. Most messages will use DFB, CFB
or M1B etc. Anything startting with a number #2T, #3B, #1T etc will be an airline
specifc system message
|
Sub Message Label
|
Direction
|
Description
|
| CF |
UP/DN |
Central Fault Display |
| DF |
UP/DN |
Digital Flight Data Acquisition Unit (Header) |
| EC |
DN |
Engine Display System |
| EI |
DN |
Engine Report |
| H1 |
UP/DN |
HF Data Radio - Left (No Header) |
| H2 |
UP/DN |
HF Data Radio - Right (No Header) |
| HD |
UP |
HF Data Radio - Selected (No Header) |
| M1 |
UP |
Flight Management Computer - Left (Header) |
| M2 |
UP |
Flight Management Computer - Right (Header) |
| M3 |
UP/DN |
Flight Management Computer - Center (Header) |
| MD |
UP |
Flight Management Computer - Selected (Header) |
| PS |
DN |
Keyboard/Display Unit |
| S1 |
UP/DN |
SDU - Left (No Header) |
| S2 |
UP/DN |
SDU - Right (No Header) |
| SD |
UP |
SDU - Selected (No Header) |
| T0 |
UP |
Cabin Terminal Message (Undefined) |
| T1 |
UP/DN |
Cabin Terminal Messages (No Header) |
| T2 |
UP/DN |
Cabin Terminal Messages (No Header) |
| T3 |
UP/DN |
Cabin Terminal Messages (No Header) |
| T4 |
UP/DN |
Cabin Terminal Messages (No Header) |
| T5 |
UP/DN |
Cabin Terminal Messages (No Header) |
| T6 |
UP/DN |
Cabin Terminal Messages (No Header) |
| T7 |
UP/DN |
Cabin Terminal Messages (No Header) |
| T8 |
UP/DN |
Cabin Terminal Messages (No Header) |
| WO |
UP/DN |
Weather Observation Report |
| A1 |
UP |
Oceanic Clearance |
| A2 |
UP |
Unassigned |
| A3 |
UP |
Departure Clearance Response |
| A4 |
UP |
Flight Systems Message |
| A5 |
UP |
Assigned |
| A6 |
UP |
Request ADS Reports |
| A7 |
UP |
Free Text |
| A8 |
UP |
Deliver Departure Slot |
| A9 |
UP |
ATIS report |
| A0 |
UP |
ATS Facility Notification (AFN) |
| AA |
UP |
ATCComm |
| AB |
UP |
TWIP Report |
| AC |
UP |
Pushback Clearance |
| AD |
UP |
Expected Taxi Clearance |
| AE |
UP |
Unassigned |
| AF |
UP |
CPC Command/Response |
| B1 |
DN |
Request Oceanic Clearance |
| B2 |
DN |
Oceanic Clearance Readback |
| B3 |
DN |
Request Departure Clearance |
| B4 |
DN |
Departure Clearance Readback |
| B5 |
DN |
Reserved |
| B6 |
DN |
Provide ADS Report |
| B7 |
DN |
Free Text |
| B8 |
DN |
Request Departure Slot |
| B9 |
DN |
Request ATIS Report |
| B0 |
DN |
ATS Facility Notification |
| BA |
DN |
ATCComm |
| BB |
DN |
Request TWIP Report |
| BC |
DN |
Pushback Clearance Request |
| BD |
DN |
Expected Taxi Clearance Request |
| BE |
DN |
CPC Aircraft Log-On/Off Request |
| BF |
DN |
CPC WILCO/UNABLE Response |
| H3 |
DN |
Icing Report |
