As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SIX ENGINE PISTONS FOUND CRACKED IN PISTON PIN BOSS. CRACKS WERE ALL IN SAME AREA, UPPER PIN BOSS RUNNING PARALLEL TO PISTON PIN. ONE PISTON HAD LOST ONE-FOURTH OF THE CASTING AROUND PIN. THIS CONDITION DID NOT CAUSE ANY OPERATIONAL PROBLEMS. JUDGING FROM CARBON CONDITION, HAD EXISTED SOME TIME. THIS PISTON IS SAME DESIGN AS SA626992 WHICH IS COVERED BY AD96-12-04.