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 42 of 173
Figure 3-9 ATC ROUTE REQ ATN (left) and FANS (right)
This page contains mutually exclusive inputs. When any one of the following parameters is
entered, the other two parameters are disabled:
• DIRECT TO
• OFFSET
• HEADING (FANS only)
The optional Selection list DUE TO can be used with any of these three mutually exclusive inputs.
This page generates a downlink that displays on a VERIFY page for aircrew review prior to
sending.
Table 3-7 ATC ROUTE REQ Fields
LSK
Label
Description
L1
DIRECT TO
Required or disabled. Acceptable input:
• FIX (4 or 5 alphanumeric characters)
• NAVAID (3 to 5 numeric or alphanumeric, 3 alpha followed by NB)
• LAT/LON FANS only. Examples:
o 5275N = N 52 00/W 075 00
o 5020S = S 50 00/E 020 00
o 5020E = N 50 00/E 020 00
• Airport ID (4 alpha characters)
L3
OFFSET
Required or disabled. LNN or RNN, left or right, where NN is 1 to 99 NM, inclusive
R1
DUE TO
Optional. Selection list used to justify any of the other three parameters:
• <blank> (default)
• WEATHER
• PERF
R3
HEADING
FANS only. Required or disabled. Degrees format:
• Degrees magnetic (default)
• Degrees true (a numeric followed by T)
R6
VERIFY
When required data is entered, VERIFY prompt appears.
VERIFICATION PAGE has an optional free text field to add a statement to justify the request.
This page formats a request that must be verified before it is sent. See the common verification
procedure described in Sec 3.4.3.2.
D-ATIS REQUEST
The D-ATIS REQ is available in an active FANS CPDLC session when ACARS is a configured
feature.