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.
No ADs published since 1998 matched this airframe or engine model.
AI-extracted — verify against original. Matched from each AD's applicability section; ADs replaced by a later AD are left out.
Service Difficulty Reports (2)
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.
Main rotor · shaft · crackedMay 19, 1995
TRANSMISSION DISASSEMBLED TO INSPECT MAST (ASB 58B35-33) (234.9 HRS SINCE LAST COMPLIANCE), .25 INCH CRACK INDICATION FOUND BEGINNING AT TRAILING DOWEL PIN HOLE TOWARDS UNDERCUT IN MAST BASE.
From FAA Service Difficulty Reports; matched by N-number and serial number.
Main rotor drive · shaft · crackedMar 7, 1995
TRANSMISSION DISASSEMBLED FOR OVERHAUL. PERFORMED MAGNAFLUX INSPECTION OF MAST FOLLOWING STRUCTURAL FAILURE OF ANOTHER MAST IN ANOTHER AIRCRAFT. FOUR INCH CRACK INDICATION FOUND BEGINNING AT DOWEL PIN HOLE TO UNDERCUT IN MAST BASE THEN UP MAST THROUGH BEARING MOUNT AREA. AIRCRAFT HAS BEEN LOGGING…
From FAA Service Difficulty Reports; matched by N-number and serial number.