Summary
This document revises an earlier proposed airworthiness directive (AD) that would have required the following on aircraft equipped with certain engine oil filter adapter assemblies manufactured by the Cessna Aircraft Company (Cessna): repetitively inspecting the engine oil filter adapter assembly or torque putty if installed, and replacing any oil filter adapter assembly with oil leakage or security problems. Since issuance of the proposed AD, the Federal Aviation Administration (FAA) has determined that the proposed action should apply to all oil filter adapter assemblies manufactured by Cessna and installed on aircraft. The FAA has also determined that the procedures specified to accomplish the proposed AD should be revised and, that, based on comments submitted on the NPRM, other changes to the AD should be incorporated. Since the addition of oil filter adapter assembly part numbers to the proposal expands the scope of what was originally proposed, the FAA is allowing the public additional time for public comment. The actions specified by the proposed 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.