Airworthiness Directive Mandates Garmin Autopilot Software Fix

On 6 Oct 2023, the FAA proposed a new airworthiness directive requiring
operators of thousands of aircraft to update Garmin autopilot software to
address a flaw causing the autopilot to make unintended flight-control

According to the agency, the AD was issued in response to an incident
involving an F33A Bonanza experiencing “an un-commanded automatic pitch trim
runaway when the autopilot was first engaged.”

The proposed rule states: “The affected autopilot system software does not
properly handle certain hardware failures of …

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