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AIM

10/12/17

5

−3−5

En Route Procedures

TBL 5

−3−5

Level Downlink Message Elements (LVLD)

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

DM6 REQUEST (alti-
tude)
Note 

− Used for a sin-

gle level

DM6 REQUEST
(level)

Y

LVLD

−1

Request to fly at
the specified level
or vertical range.

REQUEST (level)

DM9 REQUEST
CLIMB TO
(altitude)

DM9 REQUEST
CLIMB TO (level)

Y

LVLD

−2

Request for a
climb to the speci-
fied level or verti-
cal range.

REQUEST
CLIMB TO (level)

DM10 REQUEST
DESCENT TO 
(altitude)

DM10 REQUEST
DESCENT TO
(level)

Y

LVLD

−3

Request for a de-
scent to the speci-
fied level or verti-
cal range.

REQUEST DE-
SCENT TO (level)

DM38 ASSIGNED
LEVEL (altitude)
Note 

− Used for a sin-

gle level

DM38 AS-
SIGNED LEVEL
(level)

N

LVLD

−11

Confirmation that
the assigned level
or vertical range is
the specified level
or vertical range.

ASSIGNED LEV-
EL (level)

DM61 DESCEND-
ING TO (altitude)
Note 

− urgent alert at-

tribute

N/A

N

LVLD

−14

Report indicating
descending to the
specified level.

DESCENDING
TO (level single)

9/13/18

AIM