A D I R U , Stand for?
Air Data Inertial Reference Unit
IT IS FAULT TOLERANT AND FULLY REDUNDANT
ADIRU Supplies
Flight Data
Inertial reference
Air Data
ADIRU secondary system
SAARU
Must be manually set to compass
ADIRU - SYSTEM LOGIC
CAN NOT BE TURNED OFF IN FLIGHT
BUTTON - OFF LIGHT
OFF, REMAINS POWERED FOR A FEW SECONDS
WILL NOT TURN OFF UNTIL AIRSPEED IS BELOW 30K
BUTTON - ON BATT LIGHT
AIRCRAFT POWER IS LOST, HOT BATTERY BUS WILL CONTINUE TO POWER AND HORN WILL SOUND
SAARU SUPPLIES
ALTITUDE
HEADING
AIRDATA
LOST ITEMS IF FAILED
AUTO BRAKE, LNAV, VNAV, FMC FUNCTIONS, FLAP MANEUVERING SPEEDS, AND MULTIPLE OTHER MODES