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 115 of 173
Section
ID
CPDLC DM/Example
Message Intent
PANS/GOLD
3.4.3 and
3.5.3
81
WE CAN ACCEPT [level] AT
[time]
WE CAN ACCEPT 25000FT
AT 1024z
We can accept the specified level
at the specified time.
For FANS, see
DM67,
variations of
preformatted
free text
82
WE CANNOT ACCEPT [level]
WE CANNOT ACCEPT
100000FT
We cannot accept the specified
level.
83
WE CAN ACCEPT [speed] AT
[time]
WE CAN ACCEPT 200KTS AT
1130
We can accept the specified speed
at the specified time.
84
WE CANNOT ACCEPT [speed]
WE CANNOT ACCEPT
700KTS
We cannot accept the specified
speed.
85
WE CAN ACCEPT
[specifiedDistance] [direction]
AT [time]
WE CAN ACCEPT 200KM
RIGHT AT 1135
We can accept a parallel track
offset the specified distance in the
specified direction at the specified
time.
86
WE CANNOT ACCEPT
[specifiedDistance] [direction]
WE CANNOT ACCEPT 500KM
RIGHT
We cannot accept a parallel track
offset the specified distance in the
specified direction.
3.5.3
87
WHEN CAN WE EXPECT
CLIMB TO [level]
WHEN CAN WE EXPECT
CLIMB TO 20000FT
Request for the earliest time at
which a clearance to climb to the
specified level can be expected.
Envoy uses DM53
88
WHEN CAN WE EXPECT
DESCENT TO [level]
WHEN CAN WE EXPECT
DESCENT TO 1000FT
Request for the earliest time at
which a clearance to descend to
the specified level can be
expected. Envoy uses DM 52
3.5.11 89
MONITORING [unitName]
[frequency]
MONITORING EBBU CENTER
136.975
The specified airport ID is being
monitored on the specified
frequency.
ATN Only. For
FANS, see
DM67,
variations of
preformatted
free text
98 98 [freetext]
Up to 256 alpha-numeric
characters and symbols
Predefined responses: THIS
‘CONCATENATION NOT
SUPPORTED BY THIS
AIRCRAFT’
‘ELEMENT ORDER NOT
SUPPORTED BY THIS
AIRCRAFT’
‘AIR SYSTEM TIMEOUT’
99 99
CURRENT DATA AUTHORITY
- This DM is not viewable in the
ATC MSG LOG, rather displays
and is updated on ATC
LOGON/STATUS 1/2
A system-generated message to
inform a ground facility that it is
now the current data authority.
100 100
LOGICAL
ACKNOWLEDGMENT
Confirmation to the ground system
that the aircraft system has
received the message to which the
logical acknowledgment refers and
found it acceptable for display to
the responsible person.