As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PREMATURE ENGINE OVERHAUL MAY HAVE BEEN A RESULT OF WORN FILTER SUPPORT RINGS. EDGES OF RING FLANGES WERE ABOUT 50 PERCENT MISSING. THE ALUMINUM PIECES PRESUMABLY WERE INGESTED INTO ENGINES. THESE RINGS WERE NOT REPLACED AT O/H IN 1992, BUT BOTH REPLACED AT 1995 ANNUAL. HOW MUCH OF THE FLANGES HAVE BEEN INGESTED SINCE 1992 IS UNKNOWN.