GNADIRS Panel

Question 1

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

Answer 1

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

Question 2

What does the ON BAT light indicate?

Answer 2

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.

Question 3

What does a flashing white align light mean?

Answer 3

• 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

Question 4

What does a steady white ALIGN light indicate?

Answer 4

The respective IR is in the Align mode.

Question 5

What does it mean when the IR lights are extinguished?

Answer 5

Alignment has been completed

Question 6

How do you fast align an IR?

Answer 6

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

Question 7

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

Answer 7

A fault affects the respective IR.

Question 8

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

Answer 8

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

Question 9

What does the amber ADR FAULT light indicate?

Answer 9

A fault is detected in the Air Data Reference part.

Question 10

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

Answer 10

Yes

Question 11

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

Answer 11

Yes

Question 12

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

Answer 12

Attitude and heading information

Question 13

What action would recover the attitude and heading information?

Answer 13

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

Question 14

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

Answer 14

Input Heading on the IR panel every 10 minutes

Question 15

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

Answer 15

Airspeed and Altitude information

Question 16

What would restore the lost altitude and airspeed information?

Answer 16

Selecting CAPT 3 on the EIS Switching Panel AIR DATA Selector

Question 17

How do you normally enter Present Position into the IR?

Answer 17

• Insert the Lat/Long on the MCDU INIT page

- Then press Align IRS