InanotherincidentonJapanAirlinesinDecember 2020 thecountry's TransportSafetyBoardreporteditfoundtoodamagedfanblades, onewith a metalfatiguecrackonthesameengine.
Thatinvestigationisongoing.
ThefocusismoreonenginemakerPrattAuntanalystsexpectlittlefinancialimpactonBoeing, butthe P W 4000 issuesare a freshheadachefortheplanemaker, whichsawitsflagship 737 maxgroundedfornearlytwoyearsaftertwodeadlycrashes, InvestigatorswillcontinuetoexaminetheUnitedEnginesFanBladeonTuesday.
A preliminaryassessmenthasfoundsignsofmetalfatigueontheenginethatfailedon a UnitedAirlinesBoeing 777 flightoftheweekend.
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