As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH TO SVE WITH FLAPS FULLY EXTENDED, THE RT FLAP SUDDENTLY RETRACTED CAUSING SEVERE YAW. LT FLAP WAS RETRACTED AND REGAINED CONTROL. ABORTED LANDING AND RETURNED TO RNO. TRANSMISSION FAILED INTERNALLY. DRIVEN GEAR DISINTEGRATED. NOTE: WEAR CHECKS PERFORMED PER AD 82-27-13R2 EACH 100 HOURS. SUBMITTER RECOMMENDS REPLACING OLDER DUKES TRANSMISSIONS AND DECREASING THE INTERNAL INSPECTION INTERVAL.