As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) MAGNETO IDLER GEAR RETAINING NUT PN STD 43 SEPARATED FROM BOLT PN STD 1860 - NUT AND WASHER PNO 68545 FOUND IN ACCESSORY HOUSING - SUSPECT CAUSED BY LACK OF SPLIT PIN TO LOCK NUT - CARBON DEPOSITS IN SPLIT PIN HOLE INDICATE SPLIT PIN HAD BEEN MISSING FOR SOME CONSIDERABLE TIME