(Editor's Note: This story was updated after initial publication on Jan. 28 to include a statement issued by the F-35 joint program office at 5:10 p.m.) Joint Strike Fighter program officials have formally identified a "quality discrepancy" related to the aircraft's engine -- introduced by one of engine provider Pratt & Whitney's suppliers -- as the root cause of a recent failure on the F-35B, the Marine Corps' short-takeoff-and-vertical landing version of the aircraft. A date for the fleet's...
