ADIRS

Question 1

Air Data Reference data

Answer 1

baro altitude
airspeed / mach / AOA
over speed warnings
temperature

Question 2

IR data

Answer 2

altitude
Flight Path Vector (FPV)
track
heading
acceleration
angular rates
groundspeed and postion

Question 3

If there is an ADR1 fault what will restore the captain’s PFD?

Answer 3

switch to ATT/HDG
capt 3

Question 4

Complete vs Fast alignment

Answer 4

Complete…
•first flight or crew change
•departure airport between
2° north and 2° south
•GPS not available and poor navaid coverage along route
•GPS not available and
flight time > 3 hours

Fast…
•complete alignment not necessary and drift > 5nm

Question 5

IR FAULT light

Answer 5

Steady
IR has failed and not recoverable

Flashing
Navigation is lost, attitude and heading may be recovered in ATT mode