737 MAX Flight Crew Operations Manual
Flight Management, Navigation -
FMC Messages
MN-FLT-OH-201
11.60.11
ALERTING MESSAGE
CAUSE
CORRECTIVE ACTION
RW/APP CRS ERROR
During approach, MCP
selected course does not
match front course for
the approach in the
active flight plan.
Clear the message and
select correct MCP
course.
SCANNING DME FAIL Inputs from both
frequency scanning
DME radios have failed.
Clear the message and
check position. Radio
updating of FMC
position is not available.
SELECT MODE
AFTER RTA
RTA mode has been
discontinued due to
sequencing of RTA
waypoint or RTA
waypoint has been
removed from the flight
plan.
Select alternate
performance mode.
(ECON, manual speed,
etc.)
SINGLE FMC
OPERATION
The primary FMC has
determined that the
secondary FMC is not
available. (Dual FMC as
installed)
If the FMC source
selector switch is in the
“Normal” position,
move to “BOTH ON L”.
No action is required if
the FMC source selector
switch is already
positioned to “BOTH
ON L” or “BOTH ON
R”.
SW OPTIONS
INVALID
The CRC performed
during power up BIT on
the current software
options data base has
failed, or the CRC of the
software options data
base that has been loaded
via the data loader has
failed.
Reload the FMC OPC
software by
maintenance.
March 1, 2021