737 Flight Crew Operations Manual
Flight Management, Navigation -
ATC Data Link
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-866-EGP 11.34.55
3 LOGON Status Line
The LOGON status line on the LOGON/STATUS page indicates the current
connection status or attempted connection with the ground. The status line
displays one of the following messages.
• TIMER EXPIRED – a LOGON request has been downlinked and no
response from the ground has been received before the timer expired.
• LOGON IN PROGRESS – the SEND LOGON or UPDATE LOGON
LSK has been pushed and a response from the ground has not yet been
received.
• LOGON FAILED – the system has received an empty (no data) or
incorrect response from the ground, or the system has received an abort
command.
• LOGGED ON – successful LOGON with the ground has been achieved.
• LOGON DATA HAS CHANGED – a successful LOGON has been
achieved and the values on the LOGON/STATUS page do not match
those values used in the previous LOGON and a new LOGON has not
yet been attempted.
4 LOGON TO
If a facility other than the one showing is desired, push the LOGON TO> LSK.
This causes the LOGON TO page to display with available ground facilities. Push
the LSK next to the desired facility to select that facility. The display will change
to the LOGON/STATUS page with the selected facility showing in the LOGON
TO field
5 Destination Station (DEST STA)
DEST STA will be prefilled with system data, if available. When system data is
available, manual entry of these data fields is not allowed.
6 SEND LOGON
Push – initiates the logon once the FLT ID, ORIG STA, DEST STA and
controlling facility have been verified. The LOGON IN PROGRESS message is
displayed on the LOGON/STATUS page while the system sends the LOGON
request to the ground and waits for the ground response. After receiving the
appropriate response from the ground network, the message LOGGED ON is
displayed and the LOGOFF* selection becomes available.
September 15, 2016
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