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AIM

10/12/17

5−3−11

En Route Procedures

TBL 5−3−18

System Management Uplink Message Elements (SYSU)

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 Ele-

ment Display

UM159 ERROR (error

information)

UM159 ERROR

(error informa-

tion)

N

SYSU−1

System−generated

notification of an

error.

ERROR (error in-

formation)

UM160 NEXT DATA

AUTHORITY (ICAO

facility designation)

Note − The facility des-

ignation is required.

UM160 NEXT

DATA AUTHOR-

ITY (facility)

Note − Facility

parameter can

specify a facility

designation or no

facility.

N

SYSU−2

System−generated

notification of the

next data authority

or the cancellation

thereof.

NEXT DATA

AUTHORITY

(facility designa-

tion [O])

TBL 5−3−19

System Management Uplink Message Elements (SYSU)

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 Ele-

ment Display

DM62 ERROR (error

information)

DM62 ERROR

(error informa-

tion)

N

SYSD−1

System−generated

notification of an

error.

SYSD−1

DM63 NOT CUR-

RENT DATA AU-

THORITY

DM63 NOT

CURRENT 

DATA AUTHOR-

ITY

N

SYSD−3

System−generated

rejection of any

CPDLC message

sent from a ground

facility that is not

the current data au-

thority.

SYSD−3

DM64 (ICAO facility

designation)

Note − Use by FANS

1/A aircraft in B1 envi-

ronments.

DM107 NOT

AUTHORIZED

NEXT DATA

AUTHORITY

Note − CDA and

NDA cannot be

provided.

N

SYSD−5

System−generated

notification that the

ground system is

not designated as

the next data au-

thority (NDA), indi-

cating the identity

of the current data

authority (CDA).

Identity of the

NDA, if any, is also

reported.

SYSD−5

9/13/18

AIM