AHRS/AHARS Issues

Editorial Staff

Wednesday, April 20, 2022 at 07:07 PM ET

Verified

Key Takeaways:

Multiple aircraft types experienced diverse in-flight failures of their Attitude and Heading Reference Systems (AHRS), leading to a loss of critical navigation/attitude data and autopilot disengagement.
These failures occurred under various conditions, including cold weather, turbulence, and both VMC and IMC, with some incidents involving intermittent issues or spontaneous recovery.
Troubleshooting often failed to identify a clear cause for the AHRS malfunctions, though some units were definitively found defective, even shortly after overhaul.

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Beech 58 Baron

Cold-Weather Failure

Editorial Staff