4/20/23
AIM
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
N/A
N
1
LATD
−
5
Report indicating
DIVERTING TO
TO
(position)
VIA
diverting to the
(position)
VIA
(route clearance)
specified position
(en
−
route data)
Note 1.
−
H alert
via the specified
(arrival approach
attribute
route, which may
data[O])
Note 2.
−
N
be sent without any
response attribute
previous
coordination done
with ATC.
DM60
N/A
N
1
LATD
−
6
Report indicating
OFFSETTING
OFFSETTING
that the aircraft is
(specified distance)
(distance offset)
offsetting to a
(direction)
OF
(direction)
OF
parallel track at the ROUTE
ROUTE
specified distance
Note 1.
−
H alert
in the specified
attribute
direction off from
Note 2.
−
N
the cleared route.
response attribute
DM80 DEVIATING
(deviation offset)
(direction)
OF
ROUTE
Note 1.
−
H alert
attribute
Note 2.
−
N response
attribute
N/A
N
1
LATD
−
7
Report indicating
deviating specified
distance or degrees
in the specified
direction from the
cleared route.
DEVIATING
(specifiedDeviation
) (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
single level
UM19
MAINTAIN
(level)
W/U
LVLU
−
5
Instruction to
maintain the
specified level or
vertical range.
MAINTAIN
(level)
UM20 CLIMB TO
AND MAINTAIN
(altitude)
Note
−
Used for a
single level
UM20 CLIMB TO
(
level
)
W/U
LVLU
−
6
Instruction that a
climb to the
specified level or
vertical range is to
commence and
once reached is to
be maintained.
CLIMB TO (
level
)
En Route Procedures
5
−
3
−
3