CS ACNS.B.DLS.B1.070 CPDLC uplink messages
ED Decision 2022/008/R
(See AMC1 ACNS.B.DLS.B1.070, GM1 ACNS.B.DLS.B1.070 and GM2 ACNS.B.DLS.B1.070)
The data link system is capable of receiving, processing and displaying the following message elements:
ID |
Message |
UM0 |
UNABLE |
UM1 |
STANDBY |
UM3 |
ROGER |
UM4 |
AFFIRM |
UM5 |
NEGATIVE |
UM19 |
MAINTAIN [level] |
UM20 |
CLIMB TO [level] |
UM23 |
DESCEND TO [level] |
UM26 |
CLIMB TO REACH [level] BY [time] |
UM27 |
CLIMB TO REACH [level] BY [position] |
UM28 |
DESCEND TO REACH [level] BY [time] |
UM29 |
DESCEND TO REACH [level] BY [position] |
UM46 |
CROSS [position] AT [level] |
UM47 |
CROSS [position] AT OR ABOVE [level] |
UM48 |
CROSS [position] AT OR BELOW [level] |
UM51 |
CROSS [position] AT [time] |
UM52 |
CROSS [position] AT OR BEFORE [time] |
UM53 |
CROSS [position] AT OR AFTER [time] |
UM54 |
CROSS [position] BETWEEN [time] AND [time] |
UM55 |
CROSS [position] AT [speed] |
UM61 |
CROSS [position] AT AND MAINTAIN |
UM64 |
OFFSET [specifiedDistance] [direction] OF ROUTE |
UM72 |
RESUME OWN NAVIGATION |
UM74 |
PROCEED DIRECT TO [position] |
UM79 |
CLEARED TO [position] VIA [routeClearance] |
UM80 |
CLEARED [routeClearance] |
UM82 |
CLEARED TO DEVIATE UP TO [specifiedDistance] [direction] OF ROUTE |
UM92 |
HOLD AT [position] AS PUBLISHED MAINTAIN [level] |
UM94 |
TURN [direction] HEADING [degrees] |
UM96 |
CONTINUE PRESENT HEADING |
UM106 |
MAINTAIN [speed] |
UM107 |
MAINTAIN PRESENT SPEED |
UM108 |
MAINTAIN [speed] OR GREATER |
UM109 |
MAINTAIN [speed] OR LESS |
UM116 |
RESUME NORMAL SPEED |
UM117 |
CONTACT [unitname] [frequency] |
UM120 |
MONITOR [unitname] [frequency] |
UM123 |
SQUAWK [code] |
UM133 |
REPORT PRESENT LEVEL |
UM148 |
WHEN CAN YOU ACCEPT [level] |
UM157 |
CHECK STUCK MICROPHONE [frequency] |
UM159 |
ERROR [errorInformation] |
UM162 |
SERVICE UNAVAILABLE |
UM165 |
THEN |
UM171 |
CLIMB AT [verticalRate] MINIMUM |
UM172 |
CLIMB AT [verticalRate] MAXIMUM |
UM173 |
DESCEND AT [verticalRate] MINIMUM |
UM174 |
DESCEND AT [verticalRate] MAXIMUM |
UM179 |
SQUAWK IDENT |
UM183 |
[freetext] |
UM190 |
FLY HEADING [degrees] |
UM196 |
[freetext] |
UM203 |
[freetext] |
UM205 |
[freetext] |
UM211 |
REQUEST FORWARDED |
UM213 |
[facilitydesignation] ALTIMETER [altimeter] |
UM215 |
TURN [direction] [degrees] |
UM222 |
NO SPEED RESTRICTION |
UM231 |
STATE PREFERRED LEVEL |
UM232 |
STATE TOP OF DESCENT |
UM237 |
REQUEST AGAIN WITH NEXT UNIT |
The data link system is capable of receiving and processing the following message elements:
UM160 |
NEXT DATA AUTHORITY [facility] |
UM227 |
LOGICAL ACKNOWLEDGEMENT |
[Issue: CS-ACNS/4]
AMC1 ACNS.B.DLS.B1.070 CPDLC uplink messages
ED Decision 2022/008/R
The data link system should comply with EUROCAE Document ED-110B, Section 2.2.3, and with the CPDLC message syntax in ICAO Doc 9705 (Edition 2), Section 2.1.4.
The data link system should prepare the appropriate response downlink message to a received uplink message in compliance with EUROCAE Document ED‑110B, Section 2.2.3.3, Table 2-4. Received uplink messages with the response type ‘A/N’ indicated in the ‘Response’ column should be responded to with either DM2 (STANDBY), DM4 (AFFIRM) or DM5 (NEGATIVE). Received uplink messages with the response type ‘R’ indicated in the ‘Response’ column should be responded to with either DM2 (STANDBY), DM3 (ROGER) or DM1 (UNABLE).
The aircraft data link system should also handle unsupported messages (i.e. uplink messages not referenced in CS ACNS.B.DLS.B1.050) as specified in EUROCAE Document ED-110B, Section 3.3.7.6.
GM1 ACNS.B.DLS.B1.070 Uplink Messages
ED Decision 2013/031/R
The following table associates uplink CPDLC messages to the data link services.
ID |
Message |
ACM |
ACL |
AMC |
UM0 |
UNABLE |
|
x |
|
UM1 |
STANDBY |
|
x |
|
UM3 |
ROGER |
|
x |
|
UM4 |
AFFIRM |
|
x |
|
UM5 |
NEGATIVE |
|
x |
|
UM19 |
MAINTAIN [level] |
|
x |
|
UM20 |
CLIMB TO [level] |
|
x |
|
UM23 |
DESCEND TO [level] |
|
x |
|
UM26 |
CLIMB TO REACH [level] BY [time] |
|
x |
|
UM27 |
CLIMB TO REACH [level] BY [position] |
|
x |
|
UM28 |
DESCEND TO REACH [level] BY [time] |
|
x |
|
UM29 |
DESCEND TO REACH [level] BY [position] |
|
x |
|
UM46 |
CROSS [position] AT [level] |
|
x |
|
UM47 |
CROSS [position] AT OR ABOVE [level] |
|
x |
|
UM48 |
CROSS [position] AT OR BELOW [level] |
|
x |
|
UM51 |
CROSS [position] AT [time] |
|
x |
|
UM52 |
CROSS [position] AT OR BEFORE [time] |
|
x |
|
UM53 |
CROSS [position] AT OR AFTER [time] |
|
x |
|
UM54 |
CROSS [position] BETWEEN [time] AND [time] |
|
x |
|
UM55 |
CROSS [position] AT [speed] |
|
x |
|
UM61 |
CROSS [position] AT AND MAINTAIN |
|
x |
|
UM64 |
OFFSET [specifiedDistance] [direction] OF ROUTE |
|
x |
|
UM72 |
RESUME OWN NAVIGATION |
|
x |
|
UM74 |
PROCEED DIRECT TO [position] |
|
x |
|
UM79 |
CLEARED TO [position] VIA [routeClearance] |
|
x |
|
UM80 |
CLEARED [routeClearance] |
|
x |
|
UM82 |
CLEARED TO DEVIATE UP TO [specifiedDistance] [direction] OF ROUTE |
|
x |
|
UM92 |
HOLD AT [position] AS PUBLISHED MAINTAIN [level] |
|
x |
|
UM94 |
TURN [direction] HEADING [degrees] |
|
x |
|
UM96 |
CONTINUE PRESENT HEADING |
|
x |
|
UM106 |
MAINTAIN [speed] |
|
x |
|
UM107 |
MAINTAIN PRESENT SPEED |
|
x |
|
UM108 |
MAINTAIN [speed] OR GREATER |
|
x |
|
UM109 |
MAINTAIN [speed] OR LESS |
|
x |
|
UM116 |
RESUME NORMAL SPEED |
|
x |
|
UM117 |
CONTACT [unitname] [frequency] |
x |
|
|
UM120 |
MONITOR [unitname] [frequency] |
x |
|
|
UM123 |
SQUAWK [code] |
|
x |
|
UM133 |
REPORT PRESENT LEVEL |
|
x |
|
UM148 |
WHEN CAN YOU ACCEPT [level] |
|
x |
|
UM157 |
CHECK STUCK MICROPHONE [frequency] |
|
|
x |
UM159 |
ERROR [errorInformation] |
x |
x |
|
UM160 |
NEXT DATA AUTHORITY [facility] |
x |
|
|
UM162 |
SERVICE UNAVAILABLE |
|
x |
|
UM165 |
THEN |
|
x |
|
UM171 |
CLIMB AT [verticalRate] MINIMUM |
|
x |
|
UM172 |
CLIMB AT [verticalRate] MAXIMUM |
|
x |
|
UM173 |
DESCEND AT [verticalRate] MINIMUM |
|
x |
|
UM174 |
DESCEND AT [verticalRate] MAXIMUM |
|
x |
|
UM179 |
SQUAWK IDENT |
|
x |
|
UM183 |
[freetext] |
x |
x |
x |
UM190 |
FLY HEADING [degrees] |
|
x |
|
UM196 |
[freetext] |
|
x |
|
UM203 |
[freetext] |
|
x |
|
UM205 |
[freetext] |
|
x |
|
UM211 |
REQUEST FORWARDED |
|
x |
|
UM213 |
[facilitydesignation] ALTIMETER [altimeter] |
|
x |
|
UM215 |
TURN [direction] [degrees] |
|
x |
|
UM222 |
NO SPEED RESTRICTION |
|
x |
|
UM227 |
LOGICAL ACKNOWLEDGEMENT |
x |
x |
|
UM231 |
STATE PREFERRED LEVEL |
|
x |
|
UM232 |
STATE TOP OF DESCENT |
|
x |
|
UM237 |
REQUEST AGAIN WITH NEXT UNIT |
x |
x |
|
GM2 ACNS.B.DLS.B1.070 Uplink Messages
ED Decision 2013/031/R
The above ACL messages correspond to the common subset of ACL messages defined in EUROCAE Document ED-120 section 5.2.1.1.5 as required by Regulation (EC) No 29/2009.
CS ACNS.B.DLS.B1.075 CPDLC downlink messages
ED Decision 2022/008/R
(See AMC1 ACNS.B.DLS.B1.075, GM1 ACNS.B.DLS.B1.075, GM2 ACNS.B.DLS.B1.075 and GM3 ACNS.B.DLS.B1.075)
The data link system is capable of preparing and sending the following downlink message elements:
ID |
Message |
DM0 |
WILCO |
DM1 |
UNABLE |
DM2 |
STANDBY |
DM3 |
ROGER |
DM4 |
AFFIRM |
DM5 |
NEGATIVE |
DM6 |
REQUEST [level] |
DM18 |
REQUEST [speed] |
DM22 |
REQUEST DIRECT TO [position] |
DM32 |
PRESENT LEVEL [level] |
DM62 |
ERROR [errorInformation] |
DM63 |
NOT CURRENT DATA AUTHORITY |
DM65 |
DUE TO WEATHER |
DM66 |
DUE TO AIRCRAFT PERFORMANCE |
DM81 |
WE CAN ACCEPT [level] AT [time] |
DM82 |
WE CANNOT ACCEPT [level] |
DM98 |
[freetext] |
DM99 |
CURRENT DATA AUTHORITY |
DM100 |
LOGICAL ACKNOWLEDGEMENT |
DM106 |
PREFERRED LEVEL [level] |
DM107 |
NOT AUTHORIZED NEXT DATA AUTHORITY |
DM109 |
TOP OF DESCENT [time] |
[Issue: CS-ACNS/4]
AMC1 ACNS.B.DLS.B1.075 Downlink messages
ED Decision 2022/008/R
The data link system should comply with EUROCAE Document ED-110B, Section 2.2.3, and with the CPDLC message syntax in ICAO Doc 9705 (Edition 2), Section 2.1.4.
The data link aircraft equipment should prepare the appropriate response downlink message to a received uplink message in compliance with EUROCAE Document ED-110B, Section 2.2.3.3, Table 2-4.
[Issue: CS-ACNS/4]
GM1 ACNS.B.DLS.B1.075 Downlink messages
ED Decision 2022/008/R
The following table associates downlink messages with data link services.
ID |
Message |
ACM |
ACL |
AMC |
DM0 |
WILCO |
x |
x |
|
DM1 |
UNABLE |
x |
x |
|
DM2 |
STANDBY |
x |
x |
|
DM3 |
ROGER |
|
x |
|
DM4 |
AFFIRM |
|
x |
|
DM5 |
NEGATIVE |
|
x |
|
DM6 |
REQUEST [level] |
|
x |
|
DM18 |
REQUEST [speed] |
|
x |
|
DM22 |
REQUEST DIRECT TO [position] |
|
x |
|
DM32 |
PRESENT LEVEL [level] |
|
x |
|
DM62 |
ERROR [errorInformation] |
x |
x |
|
DM63 |
NOT CURRENT DATA AUTHORITY |
x |
|
|
DM65 |
DUE TO WEATHER |
|
x |
|
DM66 |
DUE TO AIRCRAFT PERFORMANCE |
|
x |
|
DM81 |
WE CAN ACCEPT [level] AT [time] |
|
x |
|
DM82 |
WE CANNOT ACCEPT [level] |
|
x |
|
DM98 |
[freetext] |
x |
x |
|
DM99 |
CURRENT DATA AUTHORITY |
x |
|
|
DM100 |
LOGICAL ACKNOWLEDGEMENT |
x |
x |
|
DM106 |
PREFERRED LEVEL [level] |
|
x |
|
DM107 |
NOT AUTHORIZED NEXT DATA AUTHORITY |
x |
x |
|
DM109 |
TOP OF DESCENT [time] |
|
x |
|
[Issue: CS-ACNS/4]
GM2 ACNS.B.DLS.B1.075 Downlink Messages
ED Decision 2013/031/R
The above ACL messages correspond to the common subset of ACL messages defined in EUROCAE Document ED-120 section 5.2.1.1.5 as required by Regulation (EC) No 29/2009.
GM3 ACNS.B.DLS.B1.075 Optional ACL Downlink Messages
ED Decision 2013/031/R
The data link system may also allow the sending the following ACL messages defined in EUROCAE Document ED-120 section 5.2.1.1.5. The message syntax should also comply with ICAO Doc 9705 (Edition 2), section 2.3.4.
ID |
Message |
DM9 |
REQUEST CLIMB TO [level] |
DM10 |
REQUEST DESCENT TO [level] |
DM27 |
REQUEST WEATHER DEVIATION UP TO [specifiedDistance] [direction] OF ROUTE |
Note: To prevent costly retrofitting, implementation of the above optional messages is highly recommended.