User's Guide

User Guide for the Envoy Data Link
Document Number: UG-15000 Rev. A Page 4 of 173
3.1.1 Aircrew LOGON Request ............................................................................................... 26
3.1.2 ATSU Connection Request............................................................................................. 27
3.1.3 CDA Assigns Next Data Authority .................................................................................. 27
3.1.4 NDA Requests a Second CPDLC Connection ................................................................ 27
3.1.5 Mode Transitions ............................................................................................................ 27
3.2 Logoff .......................................................................................................................................... 30
3.2.1 Aircrew Initiated Logoff ................................................................................................... 30
3.2.2 ATSU Initiated Logoff ..................................................................................................... 30
3.3 Lost Connection ........................................................................................................................... 31
3.4 Typical Message Composition ..................................................................................................... 31
3.4.1 DM (Downlink Message) with Unit Assignment, Selection List, Verify Message
Construction ................................................................................................................... 31
3.4.2 DM (Downlink Message) Intuitive Units (Speed Request), Message Log ........................ 33
3.4.3 UM (Uplink Message) Instructions That Require Aircrew Response ............................... 35
3.5 ATC Menu ................................................................................................................................... 38
3.5.1 ATC Request Menu – FANS 1/A+ and ATN B1 CPDLC Common .................................. 39
3.5.2 ATC REPORT Menu ...................................................................................................... 43
3.5.3 WHEN CAN WE EXPECT .............................................................................................. 49
3.5.4 POS REPORT Message – FANS 1/A+ ........................................................................... 50
3.5.5 EMERGENCY (MAYDAY) Message – FANS 1/A+ ......................................................... 51
3.5.6 ATC MSG LOG .............................................................................................................. 52
3.5.7 CLEARANCE REQUESTS – FANS 1/A+ ....................................................................... 53
3.5.8 FREE TEXT 1/2 .............................................................................................................. 56
3.5.9 ATC VOICE CONTACT Message – FANS 1/A+ ............................................................. 57
3.5.10 Cancel EMERGENCY, Cancel ADS ............................................................................... 58
3.5.11 Flight Plan Transactions and Monitoring ......................................................................... 58
4 Automatic Dependent Surveillance (ADS) ........................................................................... 60
4.1 ADS-C ......................................................................................................................................... 60
4.2 ADS Emergency .......................................................................................................................... 62
5 ACARS Operations ................................................................................................................ 64
5.1 ACARS Configurations ................................................................................................................ 65
5.2 Receiving an ACARS Message ................................................................................................... 65
5.3 Sending an ACARS Message ...................................................................................................... 65
5.4 ACARS Menu .............................................................................................................................. 65
5.4.1 The PRE FLIGHT MENU ................................................................................................ 67
5.4.2 ACARS EN ROUTE MENU ............................................................................................ 77
5.4.3 ACARS POST FLIGHT MENU ....................................................................................... 82