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 11 of 173
1.2.2 Reference Documents
Document ID
Title
ARINC 618
Air/Ground Character-Oriented Protocol Specification
ARINC 620-9
Datalink Ground Systems Standard and Interface Specification (DGSS/IS)
ARINC 622
ATS Data Link Applications Over ACARS Air/Ground Network
ARINC 623-3
Character-Oriented Air Traffic Service (ATS) Applications
EUROCAE ED-85A
Data Link Application System Document (DLASD) for the “Departure Clearance” Data Link-
Service
EUROCAE ED-89A
Data Link Application System Document (DLASD) for the “ATIS” Data-Link Service
EUROCAE ED-106A
Data Link Application System Document (DLASD) for the “Oceanic Clearance” Data-Link
Service
INST-15000-1
Installation Manual for the Envoy Data Link
1.3 Envoy CMU Features
The primary function of the Envoy is to offer a two-way data link system by which the pilot can
send and receive AOC, ATC, ATS, CPDLC, and customized messaging to/from controllers,
operations, and maintenance without the use of voice communications, relieving broadcast
network overload and miscommunications.
The CPDLC and ACARS capabilities built into the Envoy system facilitate construction and routing
of Downlink Messages (DM) requests and Uplink Messages (UM) responses thus providing
communication to and from controllers.
Message alerts appear on the Envoy visual display and light the appropriate ATC, ACARS, or FAIL
annunciator on the Envoy faceplate. Message notification is a configuration option that can be
integrated with cockpit-installed aural alerting and other devices in the cockpit.
A full QWERTY keyboard, 6 function keys and 12 LSKs provide free text as well as intuitive
shortcuts to support the aircrew to create, review, print, or download details of individual
transactions, log files, test results, or flight plan data. Configuration options control the Envoy
display lighting, keyboard backlighting, color scheme, menu selections, default values, and
preferred frequencies based on airline preference.
The Envoy ACARS default menu structure and text colors described in Section 5 can be replaced
or augmented with an airline’s custom menu structure and color scheme; this includes AOC
messages.
Default ACARS features include:
• Request one time or recurring D-ATIS and WX reports
• Request clearances (departure, arrival, oceanic, deviations)
• Automatically send flight status (OOOI) and event-triggered reports
• Send AOC messages to operations
• Optional digital clock readout on every page of the ACARS menu
The maintenance interface provides system configuration, status information for bus feeds, flight
logs, fault logs, and signal strengths of available nearby VHF stations.
Automated features in the Envoy Maintenance:
• Send flight ops and flight maintenance data
o Fault Log records
o Flight Log records
o Automated test