Part 3 Navigation

What are the normal power sources for the IRU's?
- IRU #1 - Left emergency AC
- IRU #2 - Right emergency AC
- AUX - AC bus 1
What is the alternate power source for the IRU's?

The individual IRU batteries.
What does a STEADY NAV OFF light indicate?
- A. System in align mode
- B. System is off
- C. System has a fault
What does a flashing NAV Off light indicate?
- A. Aircraft position not initialized within 10 minutes of turning IRU switches to NAV.
- B. Initialized position out of limits from previous shutdown position.
- C. Aircraft moved prior to alignment completion.
How long does IRU alignment take?

10 minutes.
When should the present position be entered in order to initialize the IRU'S?

During the 10-minute alignment cycle.
How long will the IRU batteries last?

15 minutes.

Author

learflyer

339487

Card Set

Part 3 Navigation

Description

MD11 Navigation

Updated

2018-04-12T22:09:13Z

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