Boeing 737NG operators must conduct more frequent inspections of engine fan blades as regulators move to mandate a CFM International-recommended reduction in the repetitive-check interval needed to ensure cracks are not forming at the blade roots. The European Aviation Safety Agency (EASA) on Sept. 28 published an airworthiness directive requiring operators to inspect CFM56-7B-series fan blade dovetails every 1,600 cycles, or nearly twice as frequently as the previous 3,000-cycle interval. ...

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