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AIM

10/12/17

5−3−9

En Route Procedures

TBL 5−3−13

Standard Response Downlink Message Elements (RSPD)

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

DM0 WILCO

DM0 WILCO

N

RSPD−1

Indication that the

instruction is under-

stood and will be

complied with.

WILCO

DM1 UNABLE

DM1 UNABLE

N

RSPD−2

Indication that the

message cannot be

complied with.

UNABLE

DM2 STANDBY

DM2 STANDBY

N

RSPD−3

Indication that the

message will be re-

sponded to shortly.

STANDBY

DM3 ROGER

Note − ROGER is the

only correct response

to an uplink free text

message.

DM3 ROGER

N

RSPD−4

Indication that the

message is re-

ceived.

ROGER

TBL 5−3−14

Supplemental Uplink Message Elements (SUPU)

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

UM166 DUE TO

TRAFFIC

N/A

N

SUPU−2

Indication that the

associated message

is issued due to the

specified reason.

DUE TO 

(specified reason

uplink)

UM167 DUE TO

AIRSPACE RE-

STRICTION

TBL 5−3−15

Supplemental Downlink Message Elements (SUPD)

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

DM65 DUE TO

WEATHER

DM65 DUE TO

WEATHER

N

SUPD−1

Indication that the

associated message

is issued due to the

specified reason.

DUE TO 

(specified reason

downlink)

DM66 DUE TO AIR-

CRAFT PERFOR-

MANCE

DM66 DUE TO

AIRCRAFT PER-

FORMANCE

9/13/18

AIM