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.
Cessna Aircraft Company (Cessna) Model 172 Airplanes Modified by Supplemental Type…
May 26, 2011
Airframe (172M)Only with: Modified by STC SA01303WI (installation of TAE 125-01 or TAE 125-02-99 engine).
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 · magneto · failedAug 27, 1999
RIGHT MAGNETO FAILED. MAJOR WORK ON BOTH MAGS APPROXIMATELY 850 HOURS AGO. NO MENTION OF POINTS OR CONDENSOR AT THAT TIME. 500-HOUR INSPECTIONS C/W APPROXIMATELY 200 HOURS AGO. APPEARS MAG HAD 1,646 HOURS SINCE NEW.
From FAA Service Difficulty Reports; matched by N-number and serial number.