Navigate / EASA

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