AHRS

Question 1

AHRS alignment sequence takes place as soon as … and it takes nominally …

Answer 1

• the battery is switched ON

- 3 MINUTES DURING WHICH AIRCRAFT MUST NOT BE MOVED.

Question 2

To know the remaining time for AHRS alignment …

Answer 2

• Depress AHRS FAST ERECT pushbutton
• The heading which can be read on the associated EHSI indicate the time remaining (in seconds) for AHRS alignment (example : heading 090 = 1 minute and 30 seconds).
  Then release AHRS FAST ERECT pushbutton.

Question 3

With electrical transients asociated with engine start the AHRS …

Answer 3

will normally survive

Question 4

The beginning of the 3 min alignment period may be observed as it is associated with …

Answer 4

A brief display of horizon tilted 30 deg to the right without flag.

Question 5

Resetting AHRS C/B in flight is not recommended as in flight reailgnment
requires …

Answer 5

3 minutes of very stable flight (which may be impossible to get in turbulence) and possibility of pulling the wrong C/B could lead to complete AHRS failure unrecoverable for the rest of the flight.