It said the inlet and casing separated from the engine and two fan blades were fractured, while the remainder of the fan blades exhibited damage. Japan's transport ministry ordered Japan Airlines Co Ltd (JAL) and ANA Holdings Inc to suspend the use of 777s with PW4000 engines while it considered whether to take additional measures. Japan Transport Safety Board said on Dec. 28 that it had found two of the left engine's fan blades were damaged, one from a fatigue fracture. Because of that 2018 incident, Pratt & Whitney reviewed inspection records for all previously inspected PW4000 fan blades, the NTSB said. The FAA in March 2019 issued a directive requiring initial and recurring inspections of the fan blades on the PW4000 engines.

Source: Otago Daily Times February 22, 2021 05:37 UTC