737 Flight Crew Operations Manual
Flight Management, Navigation -
FMC Preflight
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-866-EGP 11.40.33
(SB Changes YK981 - YQ456)
Changes automatically after selecting a departure procedure with a different
transition altitude.
YW273, YW274
(SB Changes YK981 - YQ456)
Changes automatically when entering flight plan data based on the following
criteria if a pilot entered value has not already been entered:
• the FMC will use the transition altitude from the NDB stored for the
SID if the flight plan is active and a SID has been selected and a
transition altitude exists for the SID.
• if an active flight plan exists and no transition altitude exists on the SID
or a SID has not been selected, then the FMC will use the transition
altitude from the NDB stored for the ORIGIN airport.
• if there is no transition altitude for the ORIGIN airport in the NDB for
the conditions defined above, then the default transition altitude will
default to the transition level from the NDB stored for the ORIGIN
airport.
• if the transition altitude is not available from any of the sources above,
then the FMC will default the transition level to 18000 feet or the value
contained in a loaded custom performance defaults data base.
Manual entry has priority.
11 PERF INIT REQUEST
Push – transmits a data link request for a PERF INIT uplink
12 N1 LIMIT
Push – displays the N1 LIMIT page.
September 15, 2016
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