User's Guide

User Guide for the Envoy Data Link
Document Number: UG-15000 Rev. A Page 121 of 173
ID
CPDLC UM/Example
Use/Intent
DO-258A
65
AT [position] OFFSET
[specifiedDistance] [direction] OF
ROUTE
AT XYZ OFFSET 200KM LEFT OF
ROUTE
Instruction to fly a parallel track to the cleared
route at a displacement of the specified distance
in the specified direction and commencing at the
specified position.
66
AT [time] OFFSET
[specifiedDistance] [direction] OF
ROUTE
AT 1232 OFFSET 200KM LEFT OF
ROUTE
Instruction to fly a parallel track to the cleared
route at a displacement of the specified distance
in the specified direction and commencing at the
specified time.
67
PROCEED BACK ON ROUTE
Instruction that the cleared flight route is to be
rejoined.
68
REJOIN ROUTE BY [position]
REJOIN ROUTE BY XYZ
Instruction that the cleared flight route is to be
rejoined at or before the specified position.
69
EXPECT BACK ON ROUTE BY
[time]
REJOIN ROUTE BY 1232
Instruction that the cleared flight route is to be
rejoined at or before the specified time.
70
EXPECT BACK ON ROUTE BY
[position]
EXPECT BACK ON ROUTE BY
XYZ
Notification that a clearance may be issued to
enable the aircraft to rejoin the cleared route at or
before the specified position.
71
EXPECT BACK ON ROUTE BY
[time]
EXPECT BACK ON ROUTE BY
1232
Notification that a clearance may be issued to
enable the aircraft to rejoin the cleared route at or
before the specified time.
72
RESUME OWN NAVIGATION
Instruction to resume own navigation following a
period of tracking or heading clearances. May be
used in conjunction with an instruction on how or
where to rejoin the cleared route.
73
[predepartureClearance]
EBBU CLEARED TO: AAAAA
Notification to the aircraft of the instructions to be
followed from departure until the specified
clearance limit.
Table 4.6-11 Route
Modifications
74
PROCEED DIRECT TO [position]
PROCEED DIRECT TO XYZ
Instruction to proceed directly from its present
position to the specified position.
75
WHEN ABLE PROCEED DIRECT
TO [position]
WHEN ABLE PROCEED DIRECT
TO XYZ
Instruction to proceed, when able, directly to the
specified position.
76
AT [time] PROCEED DIRECT TO
[position]
AT 1232 PROCEED DIRECT TO
XYZ
Instruction to proceed, at the specified time,
directly to the specified position.
77
AT [position] PROCEED DIRECT
TO [position]
AT ABA PROCEED DIRECT TO
XYZ
Instruction to proceed, at the specified position,
directly to the next specified position.
78
AT [level] PROCEED DIRECT TO
[position]
AT 25000FT PROCEED DIRECT
TO XYZ
Instruction to proceed, upon reaching the
specified level, directly to the specified position.
79
CLEARED TO [position] VIA
[routeClearance]
CLEARED TO XYZ VIA ***
Instruction to proceed to the specified position via
the specified route.
***To view msg, open ATC MSG DETAIL from
the ATC Message Log
80
CLEARED [routeClearance]
CLEARED***
Instruction to proceed via the specified route.
***To view msg, open ATC MSG DETAIL from
the ATC Message Log