Boeing and Airbus have included parts in their jets made with titanium whose certification documentation was counterfeit, the two companies acknowledged Friday.
Both manufacturers said the planes in service containing the parts were safe.
The companies bought fuselages and wings from Spirit AeroSystems, the Kansas supplier that has struggled with quality issues over the past year. The metal originated in China, where the documentation reportedly was falsified, before working its way through the global supply chain to be used in parts installed in jets made by the duelling plane makers.
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