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 41 of 173
ATC SPEED REQ
Use this page to construct a speed request. Access to this page requires an active CPDLC
session.
Figure 3-8 ATC SPEED REQ
Envoy formats a request and prompts aircrew to VERIFY the request prior to sending the downlink.
Table 3-6 ATC SPEED REQ Fields
LSK
Label
Short Description
L1
SPEED
Required. Acceptable input:
• MACH: 0.78, .78, 78, .78M or 0.78M formats are acceptable
• KTS after a numeric
• 3 numeric characters without decimal are interpreted as KTS
R1
DUE TO
Optional. Selection list:
• <blank> (default)
• WEATHER
• PERF
L6
RETURN
Open the parent ATC REQUEST MENU
R6
VERIFY
When required data is entered, VERIFY prompt appears. Pressing LSK R6 (VERIFY) displays
the constructed DM with an optional FREE TEXT
L3
FREE
TEXT
Optionally, press LSK L3 and enter up to 24 characters of explanatory text to justify the
request.
R6
SEND
When the verified message complete, press LSK R6 to send the DM.
Upon sending, the message, the ATC MSG LOG displays the datestamp and message ID awaiting
acknowledgement from the ATSU.
ATC ROUTE REQ
Use this page to construct lateral and route change requests. Access to this page requires an
active CPDLC session. This page contains mutually exclusive input fields. The FANS route request
accepts additional parameters, as shown in the two views of the page in Figure 3-9 below.