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AIM

10/12/17

5−3−3

En Route Procedures

TBL 5−3−3

Lateral Downlink Message Elements (LATD)

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

DM59 DIVERTING

TO (position) VIA

(route clearance)

Note 1. − H alert at-

tribute 

Note 2. − N

 response attribute

N/A

N

1

LATD−5

Report indicating

diverting to the

specified position

via the specified

route, which may

be sent without any

previous coordina-

tion done with

ATC.

DIVERTING TO

(position) VIA (en−

route data) (arrival

approach data[O])

DM60 

OFFSETTING 

(distance offset) 

(direction) OF

ROUTE

Note 1. − H alert at-

tribute 

Note 2. − N

 response attribute

N/A

N

1

LATD−6

Report indicating

that the aircraft is

offsetting to a par-

allel track at the

specified distance

in the specified di-

rection off from the

cleared route.

OFFSETTING

(specified distance)

(direction) 

OF ROUTE

DM80 DEVIATING

(deviation offset) (di-
rection)
 OF ROUTE
Note 1. − H alert at-

tribute 

Note 2. − N response

attribute

N/A

N

1

LATD−7

Report indicating

deviating specified

distance or degrees

in the specified di-

rection from the

cleared route.

DEVIATING

(specifiedDevia-

tion) (direction) OF

ROUTE

1  

ICAO Document 10037, Global Operational Data Link (GOLD) Manual has these values set to Y in their table.

TBL 5−3−4

Level Uplink Message Elements (LVLU)

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

UM19 MAINTAIN

(altitude)

Note − Used for a sin-

gle level

UM19 

MAINTAIN (level)

W/U

LVLU−5

Instruction to

maintain the speci-

fied level or verti-

cal range.

MAINTAIN (level)

UM20 CLIMB TO

AND MAINTAIN 

(altitude)

Note − Used for a sin-

gle level

UM20 CLIMB TO

(level)

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)

9/13/18

AIM