Airworthiness Directive · Amendment 39-9665 · Cessna Aircraft Company Engine Oil Filter Adapter Assemblies Installed on Aircraft
Cessna Aircraft Company Engine Oil Filter Adapter Assemblies Installed on Aircraft
Cessna Engine Oil Filter Adapters Assemblies, part numbers 0450404-(all dash numbers), 0556004-(all dash numbers), 0556010-(all dash numbers), 0756023-(all dash numbers), 0756024-(all dash numbers), 1250403-(all dash numbers), 1250417-(all dash numbers), 1250418-(all dash numbers), 1250921-(all dash numbers), and 1250922-(all dash numbers), installed on, but not limited to, the following: (1) Cessna Models 100, 200, 300, and 400 Series airplanes (all serial numbers), certificated in any category, that are equipped with at least one Teledyne Continental Motors (TCM) engine. (2) Airplanes that have an affected full flow engine oil adapter installed by field approval, including, but not limited to, the following model or series airplanes, certificated in any category: Manufacturer Series/models Rockwell/Aero Commander/Meyers............ 200 Series. Twin Commander............................ Models 500A and 685. Beech..................................... 33, 35, 36, and 55 Series. Piper..................................... PA46 Series. Navion.................................... Rangemaster 17 Series. Wren...................................... Model 460. Bellanca.................................. 260 and 300 Series. (3) Airplanes equipped with any of the following Teledyne Continental Motors model or model series engines: O-200 TSIO-470 TSIO-520 TSIO-550 O-470 O-520 GTSIO-520 IO-470 IO-520 IO-550
This amendment adopts a new airworthiness directive (AD) that applies to Cessna Aircraft Company (Cessna) engine oil filter adapter assemblies installed on aircraft. This action requires inspecting the oil filter and adapter assembly (or torque putty, if installed) for oil leakage and proper installation of the adapter retaining nut and fretting of associated threads (security), and replacing any oil filter adapter assembly with security problems; applying torque putty between the engine filter adapter assembly, nut, and oil pump housing (unless already equipped with torque putty); and repetitively inspecting the torque putty for misalignment, evidence of oil leakage, or torque putty cracks, and reinspecting the oil filter and adapter assembly threads if misalignment, evidence of oil leakage, or torque putty cracks are found. Reports of loose or separated engine oil filter adapters on several airplanes prompted this action. The actions specified by this AD are intended to prevent loss of engine oil caused by loose or separated oil filter adapters, which, if not detected and corrected, could result in engine stoppage while in flight and loss of control of the airplane.
