737 MAX Flight Crew Operations Manual
Flight Management, Navigation
Chapter 11
Flight Management System Operation
Section 31
MN-FLT-OH-201
11.31.1
31 Flight Management System Operation
Flight Management System Operation
File Highlight
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.
If a standard instrument departure (SID) is to be entered into the route, the
departure/arrival (DEP/ARR) page is selected. After selecting the desired SID, the
resulting modification must be appropriately linked to the existing route and
executed. This can be accomplished on the RTE or RTE LEGS page.
When all required preflight entries are complete, the preflight status prompts on
the TAKEOFF REF page are no longer displayed.
• preflight
• takeoff
• climb
• cruise
• descent
• approach
• flight complete.
• initial position
• route of flight
• performance data
• takeoff data.
• navigation database
• SID
• STAR
• Route 2
• RTA data
• cruise wind
• reduced takeoff and climb
thrust limits.
March 1, 2021