Navigation Flashcards
Which computer automatically tunes radio navaids?
FMGCs
How do we enable standby tuning on the RMP?
Via the guarded NAV button.
Which computer calculates optimum speeds during each phase?
FACs
How many IRUs are required for the MIX IRS position?
All 3.
When is a full alignment required?
A complete IRS alignment must be performed in the following
cases:
- Before the first flight of the day, or
- When there is a crew change, or
- When the departure airport is located between latitudes 2 ° north and 2 ° south, or
- When the GPS is not available and the NAVAIDS coverage is poor on the expected route, or
- When the GPS is not available and the expected flight time is more than 3 hours.
When is a fast alignment required?
A fast IRS alignment must be performed if a complete IRS alignment is not necessary and the difference between the IRS position and the FMGC position is at or above 5 NM.
See MCDU POSITION MONITOR page.
What is an example of when you would see the ADIRS ON BATT?
If the external power cord fell out or was removed by accident.
ADIR 2 and 3 will turn off after 5 minutes, ADIR 1 will stay on forever.
What is your elevation when in the black on the ND when the TERR is ON?
At least 2000’