Initialisation/Reference Index
The Initialisation/Reference Index page allows manual selection of several FMC pages. It gives access to most of the pages used during preflight.
IDENT - The IDENT page is the first page in the preflight sequence.
POS - The POS INIT page is used for IRS initialisation.
PERF - The PERF INIT page is used for initialisation of data required for VNAV operations and performance predictions.
TAKEOFF - The TAKEOFF REF page is used to enter takeoff reference data and V speeds.
APPROACH - The APPROACH REF page is used for entry of the approach VREF speed.
NAV DATA - The REF NAV DATA page is used to access data on waypoints, navaids, airports and runways. The REF NAV DATA page is accessible only from this page.
MAINT is only displayed when the aircraft is on the ground