As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) YAW DAMPER SERVO FAULTY. DUST COVER OVER THE MOTOR COLLECTING WATER (CONDENSATION). THE MOISTURE DRAIN HOLE IS LOCATED AT THE 12 O'CLOCK POSITION INSTEAD OF THE 6 O'CLOCK POSITION. AS A RESULT THE SERVO MOTOR IS BADLY CORRODED AND BURNT.