AHRS and AFCS Failures

Question 1

AHRS1 and AHRS2

Answer 1

Only when IMC
1. Land - ASAP

Question 2

GYRO (CAD) + AHRS (failed side) and <—> ATT (working side)

Answer 2

AHRS Failure - Failure of one AHRS

1. Flight controls - Hands on
2. RCU - Reconfigure for valid AHRS

Question 3

AP A.TRIM + GYRO + AHRSi

Loss of 2nd AHRS

Answer 3

Note: Loss of 2nd AHRS which has already been configured to AHRS 1 or 2 via the RCU

SECOND AHRS FAILURE
1. Flight controls - Hands on

If IMC
2. Land - ASAP

Question 4

AP A.TRIM + GYRO + TRIM

Answer 4

AHRS Discrepancies

1. Flight Controls - Hands on

Question 5

AP A.TRIM + AUTOPILOT

Answer 5

1. Flight controls - Hand on

Question 6

AP A.TRIM + GYRO + AHRS knob on RCU set to 1 or 2

Answer 6

Discrepancies between the AHRS and RATE GYRO

1. Flight controls - Hands on

If IMC
2. Land - ASAP

Question 7

AP A.TRIM + Actuation + Trim + Amber PFD axis letter

Answer 7

Single Actuation Failure: AFCS works normally, reduced control authority, no change in control feel

1. Flight controls - “Hands on”

Question 8

AP A.TRIM + GYRO

Answer 8

DISCREPANCIES BETWEEN RECONFIGURED AHRS AND RATE GYRO
1. Flight Controls - Hands on

If IMC
2. LAND ASAP

Question 9

AP A.TRIM + TRIM

Answer 9

TRIM FAILURES - loss of autotrim

1.Flight controls - Hands on

Question 10

AP A.TRIM + AUTOPILOT

Answer 10

AP DISENGAGEMENT OR FAILURE - Autotrim and AP SAS are lost. P/R SAS, Yaw SAS and P Dampener still function

1. Flight controls - Hands on

Question 11

AP A.TRIM + P/R SAS + TRIM

Answer 11

P/R SAS FAILURES - Loss autotrim, failure of P/R SAS

1. Flight controls - Hands on