User's Guide
Table Of Contents
- 1 Introduction
- 1.1 Audience
- 1.2 Overview
- 1.3 Envoy CMU Features
- 1.4 Configuration Options for Envoy
- 2 Operation of Envoy
- 3 CPDLC Operations
- 3.1 Log On
- 3.2 Logoff
- 3.3 Lost Connection
- 3.4 Typical Message Composition
- 3.5 ATC Menu
- 3.5.1 ATC Request Menu – FANS 1/A+ and ATN B1 CPDLC Common
- 3.5.2 ATC REPORT Menu
- 3.5.3 WHEN CAN WE EXPECT
- 3.5.4 POS REPORT Message – FANS 1/A+
- 3.5.5 EMERGENCY (MAYDAY) Message – FANS 1/A+
- 3.5.6 ATC MSG LOG
- 3.5.7 CLEARANCE REQUESTS – FANS 1/A+
- 3.5.8 FREE TEXT 1/2
- 3.5.9 ATC VOICE CONTACT Message – FANS 1/A+
- 3.5.10 Cancel EMERGENCY, Cancel ADS
- 3.5.11 Flight Plan Transactions and Monitoring
- 4 Automatic Dependent Surveillance (ADS)
- 5 ACARS Operations
- 6 MAINTENANCE Menu
- Appendix A Acronyms
- Appendix B AFN Messages
- Appendix C Supported CPDLC Messages
- Appendix D ADS-C Tags
- Appendix E ACARS Message Labels
- Appendix F ATSU Call Signs (ICAO, IATA)
- Appendix G Fault Management
User Guide for the Envoy Data Link
Document Number: UG-15000 Rev. A Page 118 of 173
ID
CPDLC UM/Example
Use/Intent
DO-258A
16
AT [pos] EXPECT DESCENT TO
[level]
AT XYZ EXPECT DESCENT TO
25000FT
Notification that an instruction should be
expected for the aircraft to commence descent at
the specified position to the specified level.
17
AT [time] EXPECT CRUISE CLIMB
TO [level]
AT 1232 EXPECT CRUISE CLIMB
TO 25000FT
Notification that an instruction should be
expected for the aircraft to commence cruise
climb at the specified time to the specified level.
18
AT [position] EXPECT CRUISE
CLIMB TO [level]
AT XYZ EXPECT CRUISE CLIMB
TO 25000FT
Notification that an instruction should be
expected for the aircraft to commence cruise
climb at the specified position to the specified
level.
19
MAINTAIN [level]
MAINTAIN 25000FT
Instruction to maintain the specified level.
20
CLIMB TO (AND MAINTAIN) [level]
CLIMB TO 25000FT
Instruction that a climb to a specified level is to
commence and once reached the specified level
is to be maintained.
21
AT [time] CLIMB TO (AND
MAINTAIN) [level]
AT 1232 CLIMB TO 25000FT
Instruction that at the specified time a climb to
the specified level is to commence and once
reached the specified level is to be maintained.
22
AT [position] CLIMB TO (AND
MAINTAIN) [level]
AT XYZ CLIMB TO 25000FT
Instruction that at the specified position a climb to
the specified level is to commence and once
reached the specified level is to be maintained.
23
DESCEND TO (AND MAINTAIN)
[level]
DESCEND TO 25000FT
Instruction that a descent to a specified level is to
commence and once reached the specified level
is to be maintained.
24
AT [time] DESCEND TO [level]
AT 1232 DESCEND TO 25000FT
Instruction that at a specified time a descent to a
specified level is to commence and once reached
the specified level is to be maintained.
25
AT [position] DESCEND TO [level]
AT XYZ DESCEND TO 25000FT
Instruction that at the specified position a descent
to the specified level is to commence and once
reached the specified level is to be maintained.
26
CLIMB TO REACH [level] BY [time]
CLIMB TO REACH 25000FT BY
1232
Instruction that a climb is to commence at a rate
such that the specified level is reached at or
before the specified time.
27
CLIMB TO REACH [level] BY
[position]
CLIMB TO REACH 25000FT BY
XYZ
Instruction that a climb is to commence at a rate
such that the specified level is reached at or
before the specified position.
28
DESCEND TO REACH [level] BY
[time]
DESCEND TO REACH 25000FT
BY 1232
Instruction that a descent is to commence at a
rate such that the specified level is reached at or
before the specified time.
29
DESCEND TO REACH [level] BY
[position]
DESCEND TO REACH 25000FT
BY XYZ
Instruction that a descent is to commence at a
rate such that the specified level is reached at or
before the specified position.
30
MAINTAIN BLOCK [level] TO [level]
MAINTAIN BLOCK 25000FT TO
25000FT
Instruction to maintain the specified vertical
range.
31
CLIMB TO AND MAINTAIN BLOCK
[level] TO [level]
CLIMB TO AND MAINTAIN BLOCK
25000FT TO 30000FT
Instruction that a climb to a level within the
vertical range defined is to commence.