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been loaded into RTE 1 or RTE 2, as appropriate. FMC sends a downlink response
rejecting the message and explaining why.
PERF/VNAV UNAVAILABLE - VNAV selected without gross weight, cost index,
or cruise altitude entered.
PURGE UPDATES - POS 2 - incorrect FMC position results in raw radio data
being rejected due to DME reasonableness checks.
RE-LOGON TO ATC COMM- ATC LOGONmessage was sent from the airplane
and ATC did not respond within the required time, or ATC sent a negative response
or, an error occurs which causes ATC center in communication to be disconnected
without ATC COMM transferring to anotherATC center.
RESET MCP ALT - two minutes prior to T/D point with VNAV active and MCP
not set to altitude below cruise altitude.
RESPOND TO ATC UPLINKS - ATC uplink received and causes storage to be
full or uplink received when storage is full.
RESYNC FAIL - SINGLE FMC - resynchronization is unsuccessful and one
FMC has shutdown.
April 01, 2001
747 Operations Manual
Flight Management, Navigation -
EICAS Messages
Copyright © The Boeing Company. See title page for details.
D6-30151-425 11.60.5
RESYNCING OTHER FMC - FMC synchronization in progress.
ROUTE X UPLINK LOADING - uplinked (company or ATC DL) route data
being loaded into RTE 1 or RTE 2, as appropriate; or uplink message containing
route data being loaded into RTE 1 or RTE 2, as appropriate, and a CDU button is
pushed.
ROUTE X UPLINK READY - receipt of a flight plan uplink message that
contains route data which has passed error checks and is ready to be loaded into
RTE 1 or RTE 2, as appropriate.
RTA FIX DELETED -RTA fix has been deleted from the modified flight plan.
RW/ ILS FREQ ERROR - selected ILS frequency does not match course for
destination runway in active route or valid course data not received.
RW/ILS CRS ERROR - Selected ILS course does notmatch course for destination
runway in active route or valid course data not received.
SET CLOCK TO UTC TIME - UTC from GPS is more than 12 seconds different
from Captain’s (or FO’s if Captain’s failed) flight deck clock.
SINGLE FMC OPERATION - one FMC data not available.
SPLIT IRS OPERATION - FMCs have selected single IRU position updating
while operating in polar latitudes or with significant position or velocity
differences.
TAKEOFF SPEEDS DELETED - selected V speeds are invalid.
THRUST REQUIRED - VNAV active, autothrottle disconnected, and additional
thrust required to track descent path and maintain speed.
UNABLE FLXXX AT RTA FIX - predicted crossing altitude atRTA fix less than
FLXXX, but predicted ETA within tolerance.
UNABLE NEXT ALT - VNAV active and climb not sufficient to comply with
waypoint altitude constraint.
UNABLE RTA - RTA not achievable within applicable arrival time tolerance.
UNABLE TO LOAD CLEARANCE - FMC unable to load any of the loadable
data in an uplink message.
UNABLE TO SEND MESSAGE - transmission of a downlink message has been
initiated and cannot be delivered to the ACARS MU.
VERIFY POSITION - updating sensor, radio or GPS, and FMC positions; or left
and right FMC positions differ.
VERIFY RNP - POS REF 2 - RNP option is selected in the APF, the default (based
on phase of flight) RNP changes, and the manually entered RNP exceeds the new
default RNP value.
April 01, 2001
747 Operations Manual
Copyright © The Boeing Company. See title page for details.
11.60.6 D6-30151-425
Flight Management, Navigation -
EICAS Messages
WIND DATA UPLINK READY - receipt of an uplink message containg waypoint
wind data which passes error checks and is ready to be loaded into RTE DATA
page.
FMC Advisory Messages
ARR N/A FOR RUNWAY - runway/approach selected not compatible with arrival
selected.
CRS REVERSAL AT FA FIX - entered route contains a course reversal at final
approach fix and does not contain a procedure turn.
DELETE - DELETE key pushed.
INVALID DELETE - deletion of data displayed in selected field not allowed.
INVALID ENTRY - entry format or range is incorrect for the selected field or, the
entered airway or TO waypoint does not coincide with the nav data base.
KEY/FUNCTION INOP - function selected is not availabe in existing FMC data
base.
MAX ALT FLNNN - entered cruise altitude greater than performance maximum
altitude.
NOT IN DATA BASE - data not in system.
NOT ON INTERCEPT HEADING - LNAV selected and airplane outside active
leg capture criteria and current heading will not intercept active leg.
ROUTE FULL - last route modification fills FMC beyond its capacity of 120
waypoints. Last selection not entered in route.
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