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.
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.
Reciprocating engine · plug · missingOct 20, 1995
LOWER PULLEY (CRANK) PLUG MISSING. STANDARD OIL PLUG INSTALLED IN ENGINE. LYCOMING P/N 77416 SHOULD BE INSTALLED IN ENGINES ON 269 SERIES HELICOPTERS PER LYCOMING SI 1180B. INSTALLED SCHWEIZER PLUG, PN 269A5513.
From FAA Service Difficulty Reports; matched by N-number and serial number.