FAA will order Boeing 737NG operators to perform daily functional checks designed to detect faulty engine fuel shutoff valves while Boeing finalizes a permanent fix. The defect, which FAA explains is caused by “deficiencies in the valve actuator design,” was revealed in an April 14 draft airworthiness directive. FAA says operators have discovered the defective valves during routine fuel filter replacements.  A faulty valve could prevent the flight crew from shutting the ...


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