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 84 of 173
5.4.4 ACARS MSG LOG
The ACARS Message Log displays uplink and downlink messages and reports, including ATC
message sequences, system-generated OOOI reports, and other predefined event-based reports
in chronological order, most recent first.
Figure 5-20 ACARS MSG LOG
When a new UPLINK message arrives, the ACARS annunciator illuminates. Pressing the ACARS
function key when the annunciator is lit automatically displays the ACARS message detail or, if
multiple NEW/OPEN messages exist, the MSG LOG.
The Envoy can manage up to 80 messages in the ACARS MSG LOG. The aircrew can use PREV
and NEXT function keys to scroll the message log pages.
The aircrew can delete any message that has a status of SENT, READ, or READBACK by
pressing the DEL key to set Delete mode in the message log and then pressing the LSK
associated with the message to be deleted.
An entry in the message log can represent a single message or a message transaction, which
includes the original message and the response message that closes the transaction.
Entries in the Message Log are identified by these common details:
U or D
Uplink or downlink
Zulu time
Timestamp of when the message was created
Status
The status of ACARS messages can be:
• NEW
• SENDING
• SENT
• READ
• READBACK
Message Title
A short summary of the message, based on ACARS configuration settings.
Event driven reports can be automated or requested
• POSITION RPT – 15 MIN
• OFF REPORT
• ATIS REPORT
• Free text message title default: ACARS MESSAGE
To view the details of any message in the log, press the associated LSK (R1 to R5) to open the
message in ACARS MSG REVIEW page, described in Section 5.4.4.1.
The ACARS MSG LOG is dynamic, so the status of any message updates in real time. The status
of an uplink message remains NEW until the aircrew sends a READ or READBACK response by
navigating to the last page of the message detail.