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No reports of lap join cracks for Boeing’s 777

Boeing has said there have been no reports of lap joint fatigue cracks in sections 41, 43 and 44 of the in-service Boeing 777-200 and -300 fleet, though it agrees with a new US Federal Aviation Administration airworthiness directive aimed at detecting potential cracks in those areas with repetitive ultrasonic inspections, has reported. The cracks were detected during full-scale fatigue testing of a 777 airframe at Boeing, not in the active fleet, Boeing said.