These match the airframe or engine model. Whether each one applies, and whether it's been complied with, depends on serial numbers, equipment and logbook entries. Applicability must be confirmed by a mechanic against the aircraft's records.
Superior Air Parts, Inc. Pistons Installed on Teledyne Continental Motors O-470 Series…
Aug 12, 1996
Engine (O-470-L)Only with: Superior Air Parts PMA pistons P/N SA626992 or SA626992P15 installed
AI-extracted — verify against original. Matched from each AD's applicability section; ADs replaced by a later AD are left out.
Service Difficulty Reports (1)
Reports of failures and defects that operators and repair stations sent to the FAA since 1995. A report describes one finding; it is not an accident.
Ignition · impulse cam · wornApr 11, 1996
UPON INSPECTION OF CAMS IN IMPULSE COUPLINGS FOR WEAR PER AD 78-09-07, FOUND ONE FLYWEIGHT AND RIVET WORN WELL BEYOND LIMITS. THIS IS NEW STYLE CAM WITH SNAP RING ASSEMBLY. FOR A TOTAL TIME OF ONLY 595 HOURS, FEEL THIS TO BE SIGNIFICANT WEAR AND WOULD ALSO QUESTION THE HARDNESS OF METAL.
From FAA Service Difficulty Reports; matched by N-number and serial number.