The claims were detailed in a Boeing inspector’s complaint on June 11 and made public by a Senate subcommittee on Tuesday.
Update
Before the Tuesday hearing, a congressional subcommittee accused Boeing of mismanaging parts and cutting quality inspections.
The material, purchased from a little-known Chinese company, was sold with falsified documents and used in parts that went into jets.
The issue affects jets built in South Carolina that have yet to be delivered, the company said in a statement.
As Boeing faces increased competition from Airbus, the company is expected to appoint a new CEO by the end of the year.
A Singapore Airlines flight from London was diverted to Bangkok, where more than 70 people were being treated for injuries.
Dueling narratives emerged as Boeing’s credibility is near an all-time low, leaving industry observers and the public at a loss as to the risk.
The probe intensifies scrutiny of the planemaker’s top-selling widebody jet after an Everett whistleblower alleged other issues.
Shrontz, who died Friday, was also a member of the ownership group that took over the Seattle Mariners in 1992.
Dean, 45, alleged Spirit ignored manufacturing defects on the 737 MAX. He alleged wrongful termination after he brought concerns.
Boeing’s first three months of the year have been overshadowed by the fallout from a near-catastrophic incident in January.
Dual Senate hearings Wednesday examined allegations of major safety failures at the aircraft maker.
Amid congressional hearings on Boeing’s “broken safety culture,” the company has severed ties with one of D.C.’s most powerful firms.
Two Boeing engineering executives on Monday described in detail how panels are fitted together, particularly on the 787 Dreamliner.
Sam Salehpour worked on the 787 Dreamliner but grew alarmed over changes to the assembly of the fuselage.
“At the FAA, they talked about being a partnership,” a former employee said. “I would call it more of an abusive-spouse relationship.”
The airline said Thursday it expects additional compensation, the terms of which it said are confidential.
