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AIM

10/12/17

5−3−4

En Route Procedures

CPDLC Message Sets

Operational Definition in PANS−ATM (Doc 4444)

FANS 1/A

ATN B1

Response

Message 

Element 

Identifier

Message Element

Intended Use

Format for 

Message Element

Display

UM23 DESCEND TO

AND MAINTAIN 

(altitude)

Note − Used for a sin-

gle level

UM23 DESCEND

TO (level)

W/U

LVLU−9

Instruction that a

descent to the

specified level or

vertical range is

to commence and

once reached is

to be maintained.

DESCEND TO

(level)

UM36 EXPEDITE

CLIMB TO  (altitude)

Note − This message

element is equivalent

to SUPU−3 plus

LVLU−6 in Doc 4444.

N/A

W/U

LVLU−6

Instruction that a

climb to the speci-

fied level or verti-

cal range is to

commence and

once reached is to

be maintained.

CLIMB TO (level)

UM37 EXPEDITE

DESCEND TO 

(altitude)

N/A

W/U

LVLU−9

Instruction that a

descent to the

specified level or

vertical range is

to commence and

once reached is

to be maintained.

DESCEND TO

(level)

UM38 IMMEDIATE-

LY CLIMB TO  

(altitude)

Note − This message

element is equivalent

to EMGU−2 plus

LVLU−6 in Doc 4444.

N/A

W/U

LVLU−6

Instruction that a

climb to the speci-

fied level or verti-

cal range is to

commence and

once reached is to

be maintained.

CLIMB TO (level)

UM39 IMMEDIATE-

LY DESCEND TO 

(altitude)

Note − This message

element is equivalent

to EMGU−2 plus

LVLU−9 in Doc 4444.

N/A

W/U

LVLU−9

Instruction that a

descent to the

specified level or

vertical range is

to commence and

once reached is

to be maintained.

DESCEND TO

(level)

UM135 CONFIRM

ASSIGNED ALTI-

TUDE

Note − NE response

attribute

N/A

Y

LVLU−27

Request to confirm

the assigned level.

CONFIRM AS-

SIGNED LEVEL

UM177 AT PILOTS

DISCRETION

N/A

NE

See Note

Request to confirm

the assigned level.

NOTE−
ICAO Document 10037, Global Operational Data Link (GOLD) Manual does not include this in its tables.

3/15/07

7110.65R CHG 2

AIM

9/13/18