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PREDICTIONS
UNAVAILABLE
FMC performance
predictions will not
be available for
remainder of flight.
PERFORMANCE PREDICTIONS
INHIBITED FOR DURATION
OF FLIGHT
MAINTENANCE ACTION
REQUIRED
RESET MCP ALT 2 minutes prior to the
top of descent point
with VNAV active
and MCP not set to
altitude below cruise
altitude.
MCP ALTITUDE IS SET
TO CRUISE ALT
SET LOWER ALTITUDE TO
ENABLE VNAV DESCENT
RTA FIX DELETED RTA fix has been
deleted from the
modified flight plan.
MODIFICATION DELETES
EXISTING RTA FIX
TO RETAIN RTA
ERASE MOD
TAKEOFF FLAPS
DELETED
Deletion of entered
thrust reduction flap
value results in
invalidating takeoff
flap setting.
DELETION OF ENTERED
THRUST REDUCTION
INVALIDATED TAKEOFF FLAPS
ENTER TAKEOFF FLAPS
TAKEOFF SPEEDS
DELETED
Selected V speeds are
invalid.
SPEEDS DELETED DUE TO
CHANGE IN TAKEOFF
CONDITIONS
VALIDATE OR ENTER SPEEDS
ON TAKEOFF REF PAGE
787 Flight Crew Operations Manual
Flight Management, Navigation -
EICAS Messages
11.60.8 Boeing Proprietary
Help Window Title Condition Help Window Text
THRUST
REQUIRED
VNAV active,
autothrottle
disconnected, and
additional thrust
required to track
VNAV descent path
and maintain speed.
UNABLE TO MAINTAIN VNAV
DESCENT SPEED
ADD THRUST OR ENGAGE
AUTOTHROTTLE
UNABLE FLXXX
AT RTA FIX
Predicted crossing
altitude at RTA fix
less than FLXXX,
but predicted ETA
within tolerance.
VNAV WILL NOT ATTAIN
ALTITUDE AT RTA FIX
RTA TIME WILL BE MET
REVIEW RTA CONDITIONS
UNABLE NEXT
ALT
VNAV active and
climb not sufficient
to comply with
waypoint altitude
constraint.
VNAV WILL NOT ATTAIN
ALTITUDE AT RTA FIX
RTA TIME WILL BE MET
REVIEW RTA CONDITIONS
UNABLE TO SEND
MSG
Airplane is unable to
transmit downlink
message as
commanded by crew
or airplane is unable
to automatically send
message at required
time for planned
event.
TEMPORARY
COMMUNICATION
SYSTEM INTERRUPT
RESEND MESSAGE
VERIFY RNP –
PROG 4/X
The default RNP has
changed due to a
change in flight
phase and the crew
has previously
entered a larger RNP
value than the default
on PROG page 4/X.
ENTERED VALUE GREATER
THAN DEFAULT RNP
OR LESS THAN ANP
CONFIRM RNP -
RNP PROGRESS
PAGE 4/X
787 Flight Crew Operations Manual
Flight Management, Navigation -
EICAS Messages
Boeing Proprietary 11.60.9
FMC Communications Messages
FMC communications messages:
• displays in the CDU help window
• cause the EICAS communications message •FMC to display
• cause the communications aural high–low chime to sound.
Help Window Title Condition Help Window Text
VERIFY VERT RNP
-PROG 4/X
The default Vertical
RNP has changed
due to flight phase
and the crew has
previously entered a
larger RNP value
than the default
vertical RNP on
PROG page 4/X.
ENTERED VALUE GREATER
THAN DEFAULT VERTICAL RNP
OR LESS THAN VERTICAL ANP
CONFIRM VERTICAL RNP -
RNP PROGRESS
PAGE 4/X
VIA OFFSET
INVALID
Flight conditions
invalidate the
modification with a
divert to an alternate
airport via OFFSET.
OFFSET ROUTING IS NO
LONGER VALID FOR THE
SELECTED ALTERNATE
Help Window Title Condition Help Window Text
ALTN UPLINK Up to four
company–preferred
alternate airports and
associated data has
been received and is
available for preview
on the ALTN page.
ALTERNATE AIRPORT DATA
READY TO
ACCEPT OR REJECT
ON ALTN PAGE 1/X
ALTN INHIBIT
UPLINK
A company list of up
to two alternate
airports, which will
be inhibited from
automatic selection
and display on the
ALTN page, has been
received and is
available for preview
on the ALTN page.
INHIBITED ALTERNATE
AIRPORT
DATA READY TO
ACCEPT OR REJECT
ON ALTN PAGE 1/X
787 Flight Crew Operations Manual
Flight Management, Navigation -
EICAS Messages
11.60.10 Boeing Proprietary
Help Window Title Condition Help Window Text
ALTN LIST
UPLINK
A company list of up
to 20 alternate
airports has been
received and is
　
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