What uplink message is used to tell a pilot to contact a specific unit and frequency?

UM117 CONTACT [unitname] [frequency]

What uplink message is used to instruct a pilot to proceed directly to a specific position?

UM74 PROCEED DIRECT TO [position]

What is the purpose of CS-ACNS.B.DLS.B1.070 Uplink Messages according to EASA?

The document GM1 ACNS.B.DLS.B1.070 provides guidance and associates uplink CPDLC messages to the data link services.

What does the uplink message UM157 CHECK STUCK MICROPHONE [frequency] mean?

It is a message to check for a stuck microphone on a specific frequency.

GM1 ACNS.B.DLS.B1.070 Uplink Messages

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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

Details

Source-Title: GM1 ACNS.B.DLS.B1.070 Uplink Messages View latest amendments

Erulesid: ERULES-1963177438-15740 Compare versions

Domain: Air traffic management/Air navigation services

Applicabilitydate: 1 January, 2014

Entryintoforcedate: 1 January, 2014

Regulatorysource: ED Decision 2013/031/R Navigate

Regulatorysubject: CS-ACNS

Typeofcontent: GM to CS (Guidance material to certification specification)

Parentir: CS ACNS.B.DLS.B1.070 CPDLC uplink messages

Origin: EASA

Category: EAR