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Allegiant Airbus 320 > ADIRS > Flashcards

Flashcards in ADIRS Deck (15)
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1
Q

When is a full alignment required?

A
  • First flight of the day
  • Previous flight had limited position updating
  • If any IRS drift error is 5 NM or greater
  • When required per Company pages
2
Q

When is a fast alignment acceptable?

A

-When turn around time is less than 4 hours

3
Q

How is a quick align performed?

A

Turn each IR selector off and back on (must occur within 5 seconds for each IR)

Align on REF

4
Q

When you turn the mode selector to NAV, what are you looking for on the panel?

A

The ALIGN light illuminates steady

5
Q

What does the ON BAT light indicate?

A
  • one or more IR is supplied by the aircraft battery

- also illuminates briefly during the beginning of a full alignment

6
Q

What does a flashing white align light mean?

A
  • IR alignment fault (aircraft moved during alignment)
  • no present position entered within 10 mins of NAV selection
  • difference of 1° LAT/LONG between shutdown and entered position
7
Q

What does steady illumination of the amber IRU FAULT light indicate?

A

A fault affects the respective IR, IR is lost

8
Q

What does a flashing illumination of the amber IRU FAULT light indicate?

A

Attitude and Heading may be recovered in ATT mode (navigation portion is lost)

9
Q

What does the amber ADR FAULT light indicate?

A

A fault is detected in the Air Data Reference part

10
Q

Does turning the IR to off also turn off the ADR?

A

Yes

11
Q

Can you turn the ADR OFF and still have the IR?

A

Yes

12
Q

With the loss of ADR 1, what would be lost on the Captain’s PFD?

A

Airspeed and Altitude (outside info)

13
Q

What would restore the lost altitude and airspeed information?

A

Selecting CAPT 3 on the EIS SWITCHING panel AIR DATA Selector

14
Q

What would be missing on the Captain’s PFD if IR 1 failed or was turned off?

A

Attitude and navigation information (inside info)

15
Q

What action would recover the attitude and navigation information?

A

Selecting CAPT 3 on the EIS SWITCHING panel ATT/HDG selector