737 MAX Flight Crew Operations Manual
Flight Management, Navigation -
FMC Messages
MN-FLT-OH-201
11.60.21
ADVISORY MESSAGE
CAUSE
CORRECTIVE ACTION
LOC CAP ACTIVE
The airplane is
approaching its turn onto
the LOC or GLS course
and will maintain an
intercept heading.
Clear the message
manually, or wait for the
AFDS to signal reset
status to the FMC.
LOC CAP
CANCELLED
U14 Removes [LOC
CAP CANCELLED]
Flight plan modifications
or the airplane condition
did not facilitate
localizer capture.
Clear the message
manually, or wait for the
AFDS to reset to LOC
CAP ACTIVE
MAX ALT FLXXX
(flight level value)
Altitude entry on any
page is above the
maximum altitude for
current selected
performance margins.
Clear the message or
amend the data entry.
MAX MACH
.XXX/MIN MACH
.XXX
OR
MAX CAS .XXX/MIN
CAS .XXX
FMC target speed is
greater than the
maximum or less than
the minimum buffet
speed for the entered
cruise or step climb
altitude.
Change the target speed
to within the message
limits or enter a lower
altitude.
NO DES PATH AFTER
XXXXX (waypoint)
FMC is unable to
construct a PATH DES
that satisfies all altitude
restrictions after
XXXXX.
Modify speed or altitude
restrictions on the RTE
LEGS pages.
NOT ON INTERCEPT
HEADING
Airplane is not within the
LNAV capture criteria
for the active leg (LNAV
disengages).
If the LNAV button is
pressed and the airplane
is not within the capture
criteria. (LNAV will not
engage)
Manually place the
airplane on an intercept
heading and reengage
LNAV.
March 1, 2021