A new Boeing whistleblower has come forward ahead of Tuesday’s Senate hearing with the airplane manufacturer’s CEO, accusing the company of cutting corners on quality control. 

Sam Mohawk is a Boeing employee and quality assurance inspector from Renton, Washington. Sen. Richard Blumenthal (D-CT) announced Tuesday that Mohawk had revealed himself to the senator’s office, alleging his employer uses parts that should be discarded or fixed on newly built airplanes. Mohawk’s allegations come as the attorney for two Boeing whistleblowers who died this year said their deaths have prompted at least 10 other witnesses to speak out.