737 Flight Crew Operations Manual
Flight Management, Navigation -
FMC Messages
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
11.60.22 D6-27370-866-EGP
ADVISORY MESSAGE CAUSE CORRECTIVE ACTION
RESET MCP ALT Normal FMC operation
would require flying
away from MCP altitude.
Select a MCP altitude
value in the proper
direction (higher for
climb, lower for
descent).
RESET MCP APP
MODE
(U10.5 and later)
A change in the expected
approach is made with an
FCC approach mode
armed or engaged.
Clear and rearm FCC
approach mode. Clear
the message.
RUNWAY N/A FOR
SID
The selected runway is
not applicable to the
selected departure
procedure.
Clear the message and
check selections on the
DEPARTURES page.
Modify as required.
SELECT ACTIVE
WPT/LEG
Power–up restart or
insertion of a different
flight plan while
airborne.
EXECute a direct–to or
leg intercept to tell the
FMC which leg of the
route is active.
STEEP DESCENT
AFTER XXXXXX
An excessive vertical
discontinuity exists after
point XXXXXX.
Check routing.
TAI ON ABOVE 10°C Airplane is operating
with anti–icing with TAT
above +10°C.
Clear the message and
check the use of anti–
icing for engines and/or
wings.
UNABLE CRZ ALT FMC predicts that no
cruise time is possible at
the entered CRZ ALT.
Clear the message and
review the CRZ ALT
selection.
UNABLE MACH. XXX The entered cruise Mach
is unattainable based on
present gross weight.
Select a smaller Mach
number or wait until
gross weight is reduced
sufficiently.
UNABLE TO OFFSET A valid offset cannot be
constructed due to
geometric limitations.
Clear the message and
amend the route.
September 15, 2016
To Next Page
Loading...
