737 MAX Flight Crew Operations Manual
Flight Management, Navigation -
FMC Preflight
MN-FLT-OH-201
11.40.45
The default value is determined by the airline and is stored in the model/engine
database. The default is displayed in small font.
Manual entries allowed on the ground. Entries must be between 800 to 9,999 feet
and are displayed in large font.
Deletion of a manual entry returns the display to the default value.
Menu Page
The menu page is selected with the MENU key or is automatically displayed when
the currently active subsystem fails or on initial power up if the FMC system is
not detected.
The menu page displays subsystems (ACARS, DFDAU, etc.) that require
control/display functions through the MCDU and provides a means to temporarily
access to these subsystems. The active system is indicated by <ACT> displayed
next to the system title. A subsystem that requires use of the CDU displays a
request message <REQ> next to the subsystem title. The FMC system or a
requesting subsystem is accessed by using the line select key next to the title. The
FMC can be reselected by selecting the FMC prompt on the MENU page or
selecting any mode key (INIT/REF, RTE, etc.). A subsystem can be temporarily
placed on hold <HLD> by selecting the subsystem XXXXXX HOLD> line select
key returning the CDU display to the currently active FMC page (XXXXXX
represents the system name). While the subsystem is on hold the MCDU CALL
light is illuminated. To reselect the subsystem on hold, push the subsystem line
select key again. When a subsystem is placed on hold a XXXXXX LOGOFF
prompt appears to allow for release of the subsystem being held. No more than one
subsystem can be selected at a time. If an attempt is made to select more than one
subsystem, a FIRST LOGOFF XXXXXX prompt is displayed as a reminder to
logoff the currently active subsystem.
March 1, 2021
