737 MAX Flight Crew Operations Manual
Flight Management, Navigation -
FMC Preflight
11.40.8
MN-FLT-OH-201
Position Initialization Page 1/3
The position initialization page 1/3 allows airplane present position entry for IRS
alignment and FMC initialization. The same page is used to enter/update the
magnetic heading for an IRS which is in the ATT mode. There are three POS
pages.
1
Reference Airport (REF AIRPORT)
The reference airport entry allows entry of the current airport for display of the
airport latitude/longitude.
Optional entry.
REF
INIT
INERTIAL POSITION NOT ENTERED
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March 1, 2021