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Question 1

What are the 3 selection modes in the ADIRS control panel?

Answer 1

NAV, ATT, OFF

Question 2

What are the 4 types of sensors that feed into the ADIRS?

Answer 2

Pitot Probes (3)
Static Pressure Probes (6)
Angle of Attack sensors (3)
Total Air Temperature Probes (2)

Question 3

What convert pneumatic data from the probes to numerical data to the ADIRU’s?

Answer 3

Air Data Modules (ADM’s x 8)

Question 4

What is the only probe that is on the WRONG side of the aircraft?

Answer 4

Static Ports, CAPT on FO side and vise versa

Question 5

What is each ADIRU supplied by?

Answer 5

ADIRU 1 - CAPT probes
ADIRU 2 - FO probes
ADIRU 3 - STBY probes and CAPT TAT

Question 6

What does ON BAT mean on the ADIRS panel?

Answer 6

Batteries are supplying at least 1 ADIRU (always come on for a few seconds during a complete IRS alignment)

Question 7

What information can the ATT mode provide?

Answer 7

Attitude and heading data (if entered by flight crew)

Question 8

What’s the difference between the ATT HDG and AIR DATA on the pedestal?

Answer 8

ATT HDG relates to the IR side
AIR DATA relates to the ADR side