As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) NO3 CYLINDER/PISTON COMBINATION INCORRECT - A +015IN OVERSIZE PISTON PNO 646743 WAS FITTED TO A STANDARD SIZE CYLINDER PNO 649484 - PISTON HAD PICKED UP IN CYLINDER BORE - METAL CONTAMINATION OF OIL SYSTEM - CYLINDER HAD BEEN CHANGED ON 13NOVEMBER 1995 AT 2027 HOURS - PERSONNEL/MAINTENANCE ERROR - UNAPPROVED PART