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.
Propellers · bulkhead · crackedMar 3, 1995
DURING PROPELLER REMOVAL, FOUND CRACKS AT EACH BOLT HOLE. BULKHEAD WAS INSTALLED WITH NEW A-4227-1 SHOULDER WASHERS AT INITIAL INSTALLATION 72 HOURS PRIOR. SUSPECT CRACKS DUE TO POOR DESIGN AND POOR MANUFACTURING.
From FAA Service Difficulty Reports; matched by N-number and serial number.