GNADIRS Panel Flashcards Preview

Spirit Oral Study Guide > GNADIRS Panel > Flashcards

Flashcards in GNADIRS Panel Deck (17):

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

Ensure that each ADIR has the ability to revert to the batteries by observing the BAT light illuminating for several seconds.


What does the ON BAT light indicate?

It is illuminated amber if one or more IR(s) is supplied by the aircraft battery. Also illuminates briefly during the
beginning of a full alignment.


What does a flashing white align light mean?

• IR alignment fault (aircraft moved during alignment)
• No present position entered within 10 minutes of NAV selection
• Difference of 1° Lat/Long between shutdown and entered position


What does a steady white ALIGN light indicate?

The respective IR is in the Align mode.


What does it mean when the IR lights are extinguished?

Alignment has been completed


How do you fast align an IR?

Turn the IR mode selectors OFF momentarily (not more than 5 seconds) and then back on


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

A fault affects the respective IR.


What does flashing illumination of the amber IR FAULT light indicate?

Attitude and Heading may be recovered in ATT mode (you have lost the navigation portion)


What does the amber ADR FAULT light indicate?

A fault is detected in the Air Data Reference part.


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



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



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

Attitude and heading information


What action would recover the attitude and heading information?

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


What information must be input when the IR is in ATT?

Input Heading on the IR panel every 10 minutes


With the loss of ADR 1, what would be lost on the Captains PFD?

Airspeed and Altitude information


What would restore the lost altitude and airspeed information?

Selecting CAPT 3 on the EIS Switching Panel AIR DATA Selector


How do you normally enter Present Position into the IR?

- Insert the Lat/Long on the MCDU INIT page
- Then press Align IRS