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 30 of 173
LSK
LABEL
Description
R1
ADS EMER
OFF
FANS only. Header displays current emergency state OFF (default) or ON
Selecting ON activates emergency broadcast mode (1-minute intervals).
Other ways to activate emergency broadcast mode:
• Press the ATC function key for 5 seconds or longer to activate ADS Emergency, even
when not connected to a ground facility.
• Send a MAYDAY MAYDAY MAYDAY or PAN PAN PAN free text downlink
R3
ADS-C
TABLE
FANS only. Link to the active ADS contracts page, (SYS) MONITOR 6/6 described in Section
6.3
R5
DLK
STATUS
Data link status: AVAIL/UNAVAIL/NO COMM/FAILED is set by system.
AVAIL
ATN B1 and/or FANS 1/A CPDLC data link available over VDL Mode
2 or SATCOM
UNAVAIL
No media connection available for the current CPDLC application
(ATN B1 or FANS 1/A)
NO COMM
No media available for any data link functions including ACARS
FAILED
Abnormal Termination of active CPDLC session (FANS 1/A or ATN
B1)
INHIBITED
ATC COMM has been manually set to OFF at LSK L5 on this page.
Aircrew must reenable by setting ATC to ON.
R6
LOGON (or
RESEND)
Visible when required items are supplied and after the ENVOY has established a data link
with the specified ATSU. If the ATSU has not sent a connection request before the logon
message times out, the LOGON/STATUS pages redisplay with RESEND instead of LOGON
at LSK R6.
When the ATSU responds to a LOGON request, the scratchpad displays CPDLC ESTABLISHED.
3.2 Logoff
3.2.1
Aircrew Initiated Logoff
The aircrew can logoff a COMM session and inhibit ADS-C contracts.
To log off a current CPDLC session
1. Press ATC function key to display ATC MENU.
2. Press LSK R6 (LOGON/STATUS) to display ATC LOGON/STATUS.
3. Press NEXT function key.
4. On ATC LOGON/STATUS 2/2, press LSK L5 (ATC COMM) to toggle OFF.
The DLK STATUS updates to INHIBIT.
The scratchpad displays an advisory message: TERMINATED; this advisory message is not
saved to a message log.
If an NDA has been set up, the Envoy automatically saves and displays the ATSU ID for the
next logon sequence.
3.2.2 ATSU Initiated Logoff
The CDA may initiate a logoff by sending either of these uplinks:
• Contact Next Data Authority
• Terminate All Services
Contact Next Data Authority Uplink
When the current data authority uplinks a CONTACT NEXT DATA AUTHORITY: