TBL 5-3-5

Level Downlink Message Elements (LVLD)
CPDLC Message Sets

Operational Definition in PANS-ATM (Doc 4444)
Format for
Message Element
Display

Response

Message
Element
Identifier

DM6 REQUEST (alti- DM6 REQUEST
tude)
(level)
Note - Used for a single level

LVLD-1

Request to fly at
the specified level
or vertical range.

REQUEST (level)

DM9 REQUEST
CLIMB TO
(altitude)

DM9 REQUEST
CLIMB TO (level)

LVLD-2

Request for a
climb to the specified level or vertical range.

REQUEST
CLIMB TO (level)

DM10 REQUEST
DESCENT TO
(altitude)

DM10 REQUEST
DESCENT TO
(level)

LVLD-3

Request for a descent to the specified level or vertical range.

REQUEST DESCENT TO (level)

DM38 ASSIGNED
LEVEL (altitude)
Note - Used for a single level

DM38 ASSIGNED LEVEL
(level)

LVLD-11

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

ASSIGNED LEVEL (level)

LVLD-14

Report indicating
descending to the
specified level.

DESCENDING
TO (level single)

FANS 1/A

DM61 DESCENDING TO (altitude)
Note - urgent alert attribute

En Route Procedures

ATN B1

Message Element
Intended Use

5-3-5