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 125 of 173
169 (4)
‘REPORT CLEAR OF
WEATHER’
Instruction to report when clear of
weather. Response attribute (DM69)
169 (5)
‘STOP CLIMB AT [altitude]’
Instruction to stop climb at specified
level, and once specified level is
reached, maintain. Instruction should
be issued only when controller can
confirm that the previously assigned
level has not yet been reached.
169 (6)
‘STOP DESCENT AT [altitude]’
Instruction to top the descent at the
specified level and, once reached,
this level is to be maintained. The
specified level will be above
previously specified level. This
instruction should only be issued
when the controller can confirm that
the previously assigned level has not
yet been reached.
169 (7)
‘EXPECT [level single] [number
of minutes] AFTER
DEPARTURE’
Notification that a clearance may be
issued for the aircraft to commence a
climb to the specified level at the
specified number of minutes after
departure.
169 (8)
‘ADVISE PREFERRED LEVEL’
Request to provide preferred level.
FANS only, response is DM67(2)
preformatted. (ATN: see UM231)
169 (9)
‘ADVISE TOP OF DESCENT’
Request to provide the preferred time
and/or position to commence
descent to the aerodrome of
intended arrival. FANS only (ATN:
see UM232)
169 (10)
‘NO SPEED RESTRICTION’
Indication that the preferred speed
may be flown w/out restriction. FANS
only. (ATN: see UM222)
169 (11)
‘REPORT GROUND SPEED’
Used when controller requests
aircrew to report present ground
speed.
169 (12)
‘[facilityID] ALTIMETER
[altimeter setting]’
Advisory providing the specified
altimeter setting for the specified
facility. Facility designation is always
provided, time provided if available.
See UM153 ATN: UM213
169 (13)
‘SURVEILLANCE SERVICE
TERMINATED’
Advisory that the radar and/or ADS-B
service is terminated. (See also
UM154). FANS
169 (14)
‘REQUEST AGAIN WITH
NEXT ATC UNIT’
Advisory to request again with next
ATSU. ATN: UM237
169 (15)
‘TRAFFIC IS [traffic
description]’
Advisory of traffic significant to the
flight.
169 (16)
‘REPORT SIGHTING AND
PASSING OPPOSITE
DIRECTION [trafficDescription]
(ETP [time])’
Instruction to report that the specified
traffic has been visually sighted and
passed. The instruction may indicate
the estimated time of passing (if
available).
169 (17)
‘STOP ADS-B
TRANSMISSION’
Instruction to stop ADS-B
transmissions. (Response attribute)
169 (18)
‘ACTIVATE ADS C’
Instruction to activate the ADS-C
capability.
169 (19)
‘ADS-C OUT OF SERVICE
REVERT TO CPDLC
POSITION REPORTS’ (R
response)
Instruction to transmit CPDLC
position reports, as specified, due to
ADS-C being out of service.
169 (20)
‘ADS-C OUT OF SERVICE
REVERT TO VOICE
POSITION REPORTS’ (R
response)
Instruction to transmit voice position
reports, as specified, due to ADS-C
being out of service.
169 (21)
‘RELAY TO [callSign]
[unitName] [text]
([frequency[O]])’
Instruction to intermediary aircraft to
relay the specified message to the
specified aircraft on the specified