As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLUTCH LOCKED UP CAUSING DAMAGE TO INPUT PINION P/N 4638-302-002, S/N 2935, AND FREEWHEEL SHAFT P/N 4638-302-013 , S/N 89. REPLACED DAMAGED PARTS WITH NEW PARTS AND PERFORMED LOAD TEST TO TRANSMISSION AND INSPECTION AFTER LOAD TEST AND RETURNED TO SERVICE.