737 Flight Crew Operations Manual
Flight Management, Navigation Chapter 11
Flight Management System Operation Section 31
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-866-EGP 11.31.1
31 Flight Management System OperationFlight Management System OperationFile H ighlight
Introduction
When first powered, the FMS is in the preflight phase. As a phase is completed,
the FMS automatically transitions to the next phase in this order:
Preflight
During preflight, flight plan and load sheet information are entered into the CDU.
The flight plan defines the route of flight from the origin to the destination and
initializes LNAV. Flight plan and load sheet information provide performance
information to initialize VNAV.
Required preflight information consists of:
Optional preflight data includes:
Each required or optional data item is entered on specific preflight pages.
Preflight begins with the IDENT page. If the IDENT page is not displayed, it can
be selected from the IDENT prompt on the INIT/REF INDEX page. Visual
prompts provide assistance in selecting the appropriate CDU pages. Preflight
pages can be manually selected in any order.
After entering and checking the necessary data on each preflight page, the lower
right line select key is pushed to select the next page. When ACTIVATE is
selected on the RTE page, the execute light illuminates. The EXEC key is then
pushed to complete the task of making the route active before continuing with the
preflight.
• preflight
• takeoff
• climb
•cruise
• descent
• approach
• flight complete.
• initial position
• route of flight
• performance data
• takeoff data.
• navigation database
•SID
•STAR
YW273, YW274
(SB Changes YK981 - YQ456)
• Route 2
•RTA data
•cruise wind
• reduced takeoff and climb
thrust limits.
September 15, 2016
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