AHRS/AHARS Issues

Editorial Staff

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

Verified

Key Takeaways:

Multiple aircraft reported in-flight failures of their Attitude, Heading, Reference System (AHRS), resulting in loss of critical flight data and autopilot disengagement.
These failures occurred under various conditions, including extreme cold, severe turbulence, and routine cruise, often necessitating emergency declarations and diversions.
Maintenance frequently struggled to identify the root cause of these AHRS malfunctions, with many units testing normal after the incident or exhibiting intermittent failures that later resolved themselves.

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Beech 58 Baron

Cold-Weather Failure

Editorial Staff