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 21 of 173
Alerts
An alerting message is an uplink or a system state/fault that activates visual annunciators and an
aural alert. If multiple messages accrue, the messages stack in the scratchpad in top-down
prioritized order according to type of information and fault severity.
Alert messages accrue in the respective message log and can be viewed by going to the
respective log file. For more information, see:
• ATC MSG LOG
• ACARS MSG LOG
• FLIGHT LOG
• FAULT LOG
Alert text is often dynamically generated; however, some common predefined alerts include:
• ADS-C EMER MODE (DIS/EN)ABLED
• ENTER FLIGHT NUMBER
• NO COMM
• NO RADIO
• PRESS LSK TO DISARM
• SATCOM INOP
• VHF(SATCOM) (UN)AVAILABLE
Advisories
An advisory is typically a data entry error or a low priority state change to a peripheral device.
Advisory messages do not trigger an annunciator and do not get saved to a message log.
Advisory text is also dynamically generated; some common predefined advisory messages are:
24 CHARACTERS MAX
Input exceeds field size. Review data prior to upselecting to an input field.
ACARS NOT ENABLED
Displays when the ACARS function key is pressed on an Envoy that is not
configured with ACARS.
ATC NOT ENABLED
Displays when the ATC function key is pressed on an Envoy that is not
configured with ATN or FANS.
BRT NEEDS +/- ON SCRATCH
Displays when attempting to adjust the brightness when it is already 100%
CANNOT DISABLE BOTH
Page has more than one field that can be disabled, one must be enabled.
CANNOT DISPLAY ROUTE
CANNOT EDIT SELECT LIST
Input is limited to predefined list
CPDLC ESTABLISHED
ATSU has processed and accepted a LOGON request
CPDLC TERMINATED
Current CPDLC session has been terminated by either aircrew or ATSU.
Clearing this message extinguishes the ATC annunciator and sets the CPDLC
FAIL output discrete to INACTIVE.
INCORRECT PASSWORD
INVALID PAGE
LSK NOT ACTIVE
User pressed an LSK which has no function or which is a read-only value.
MAXIMUM RPTS QUEUED
Displays when attempting to queue more than 10 automated ATC downlink
reports.
MSG CONSTRUCTION FAILED
NO ACTIVE CPDLC SESSION
An attempt to select a CPDLC page from the ATC MENU when not logged into
a CPDLC session.
NO BLOCK WITH POS/TIME
PERFORM CPDLC LOGON
PRESS LSK TO DISARM
Notification to disable automatic reporting for the selected ATC downlink report
PRINTER (UN)AVAILABLE
Advisory message about change in printer status.
PRINTING (FAIL)
Notification about an attempt to print a report