NOTE-
Pilots are expected to maintain a listening watch on the transferring controller"s frequency until the time, fix, or altitude
specified. ATC will omit frequency change restrictions whenever pilot compliance is expected upon receipt.
TBL 5-3-1

Route Uplink Message Elements (RTEU)
CPDLC Message Sets

Operational Definition in PANS-ATM (Doc 4444)

FANS 1/A

ATN B1

Response

Message
Element
Identifier

UM74 PROCEED
DIRECT TO
(position)

UM74 PROCEED
DIRECT TO
(position)

W/U

RTEU-2

Instruction to
proceed directly to
the specified
position.

PROCEED
DIRECT TO
(position)

UM79 CLEARED
TO (position) via
(route clearance)

UM79 CLEARED
TO (position) via
(route clearance)

W/U

RTEU-6

Instruction to
proceed to the
specified position
via the specified
route.

CLEARED TO
(position) VIA
(departure data[O])
(en-route data)

UM80 CLEARED
(route clearance)

UM80 CLEARED
(route clearance)

W/U

RTEU-7

Instruction to
proceed via the
specified route.

CLEARED
(departure data[O])
(en-route data)
(arrival approach
data)

UM83 AT
(position)
CLEARED (route
clearance)

W/U

RTEU-9

Instruction to
proceed from the
specified position
via the specified
route.

AT (position)
CLEARED
(en-route data)
(arrival approach
data)

Message Element
Intended Use

Format for
Message Element
Display

TBL 5-3-2

Route Downlink Message Elements (RTED)
Operational Definition in PANS-ATM (Doc 4444)

CPDLC Message Sets
FANS 1/A

ATN B1

Response

Message
Element
Identifier

DM22 REQUEST
DIRECT TO
(position)

DM22 REQUEST
DIRECT TO
(position)

RTED-1

5-3-2

Message Element
Intended Use

Format for
Message Element
Display

Request for a direct
clearance to the
specified position.

REQUEST
DIRECT TO
(position)

En Route Procedures