TBL 5-3-5

Level Downlink Message Elements (LVLD)
CPDLC Message Sets

Operational Definition in PANS-ATM (Doc 4444)

ATN B1

Response

Message
Element
Identifier

DM6 REQUEST
(altitude)
Note - Used for a
single level

DM6 REQUEST
(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

Message Element
Intended Use

Format for
Message Element
Display

5-3-5