The Charleston County Coroner's Office told the BBC that John Barnett, 62, died from a self-inflicted wound on Saturday. According to the BBC, Barnett was cross-examined by Boeing's lawyers and his own attorney days before he died.The court planned for Barnett to answer more questions on Saturday, but he did not appear as planned. The BBC reported that he was later found dead in his truck, which was parked in a hotel parking garage.
This meant that a quarter of 787 Dreamliners had the potential to rapidly lose oxygen if the cabins were suddenly decompressed, suffocating passengers.Barnett said that he had encountered these issues when he began working at Boeing's North Charleston plant in 2010. He reportedly raised his concerns to his managers, but did not see them take any action.