737 Flight Crew Operations Manual
Flight Management, Navigation Chapter 11
ATC Data Link Section 34
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D6-27370-866-EGP 11.34.1
34 ATC Data LinkATC Data LinkFile Highlig ht
Air Traffic Control Data Link
YK981 - YQ456
For airplanes with the Air Traffic Control (ATC) data link function installed, these
functions are accomplished on the CDU. They include Air Traffic Services (ATS)
Facilities Notification, Automatic Dependent Surveillance (ADS), and ATC Data
Link
The ATC LOGON/STATUS page provides the capability to initiate an AFN
downlink to a specified ATS facility and to display the ADS, ATC DL, and data
link status.
The ATC UPLINK pages display messages uplinked by an ATS facility and
provide the capability to respond to uplinked messages and to load clearances
which contain loadable data.
The ATC REQUEST pages provide capability to create downlink requests for
vertical and speed clearances, lateral offsets, and route changes.
The FMC formats reports in response to requests from an ATS facility for reports
and confirmation. These reports are accessible via the ATC REPORT page and
display for review or modification on the VERIFY REPORT pages.
The ATC LOG page provides a list of all uplinks and downlinks stored in the ATC
Log and provides access to the XXXXZ ATC UPLINK, XXXXZ ATC
REQUEST, XXXXZ ATC REPORT, and XXXXZ EMERGENCY pages
corresponding to each logged uplink or downlink.
To accomplish Automatic Dependent Surveillance, the FMC can simultaneously
receive requests from five ATC centers and one airline center. Airline ADS
addresses are stored in the airline policy file. The ADS functions include periodic,
event, and on–demand reporting. The type and content of a report is initiated by
uplink request. These functions are automatic. The flight crew can disable this
function on the ATC LOGON/STATUS page.
September 15, 2016
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