737 Flight Crew Operations Manual
Flight Management, Navigation -
FMC Descent and Approach
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11.43.12 D6-27370-866-EGP
Data may be up-linked via ACARS message. The up-linked value will appear in
small font until EXECuted at which time it will be displayed in large font.
5 ISA Deviation and QNH (DEV/QNH)
Enter the average ISA deviation for descent in °C (+/–XX°C) or °F (+/–XX°F)
Enter the destination QNH altimeter setting (IN. HG. or MB). Do not enter a QFE
altimeter setting.
Data may be up-linked via ACARS message. The up-linked value will appear in
small font until EXECuted at which time it will be displayed in large font.
6 ERASE or LOAD
Push – (ERASE) deletes modification and returns page to previously displayed
descent page.
Push – (LOAD) initiates the loading of ACARS up-linked descent forecasts data.
LOAD is displayed when ACARS descent forecasts has the highest load priority
and no EXECutes or ACCEPT/REJECTs are pending.
7 DES WINDS REQUEST
Push – transmits a data link request for descent winds.
Engine Out Descent
There are no specific engine out pages for descent. Use the normal descent
planning features and pages.
Approach
During approach, LNAV and VNAV guidance normally transitions to the
approach guidance provided by navigation radios. The FMC continues to
calculate and display present position and can provide LNAV and VNAV
approach guidance for certain types of approaches when radio navigation is not
used.
The RTE LEGS and PROGRESS pages are used to manage the airplane until other
approach guidance becomes active. Other pages which support approaches are:
• APPROACH REF page – to select the approach VREF
• ARRIVALS page – to select the desired arrival and approach
procedures
• HOLD page – to manage holding patterns.
Holding is described in this section but it can be used during any phase of flight.
September 15, 2016
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