FAA is expanding the applicability of an emergency airworthiness directive calling for the replacement of certain hydraulic lifters before further flight. In an airworthiness directive released last week, FAA calls for hydraulic lifter replacement on Teledyne Continental Motors Series 240, 346, 360, 470, 520 and 550 engines and Rolls-Royce IO-240-A engines. The latest AD, which adds TCM 346 and Rolls-Royce IO-240-A engines, was issued following another occurrence of rapid wear on the face of ...

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