The worries surround the manufacturer’s 787 and 777 jets, which are in widespread use by the world’s airlines, including British Airways and Virgin Atlantic.
They follow issues with the single-aisle 737 Max, which most recently suffered a door plug blow-out during an Alaska Airlines flight in January.
The Washington-based Federal Aviation Administration (FAA) is now examining new claims from Boeing engineer Sam Salehpour, who said he had faced retaliation after identifying issues allegedly affecting the structural integrity of the airliners.
