A380 Systems

Question 1

What is the maximum difference between altimeters on the PFDS?

Answer 1

+/- 20’

Question 2

What is the maximum difference between PFD altimeter and the ISIS?

Answer 2

+/- 30’

Question 3

When must you perform a complete ADIRS alignment ?

Answer 3

First flight of the day,
A change of flight crew,
The GPS is not available

Question 4

How do you perform a fast alignment of the ADIRS?

Answer 4

Turn all IRs to OFF, then back on within 5 secs.

Note: if during refuelling or Auto Ground Transfer (AGT), at least one IR should remain operative. Therefore, switch 2 IRs then set back to NAV and wait 40 secs before switching off the 3rd.