John Barnett had worked for Boeing for 32 years, until his retirement in 2017.
In the days before his death, he had been giving evidence in a whistleblower lawsuit against the company.
Boeing said it was saddened to hear of Mr Barnett’s passing. The Charleston County coroner confirmed his death to the BBC on Monday.
It said the 62-year-old had died from a “self-inflicted” wound on 9 March and police were investigating.
So, the guy was expected to appear in court for thw second round of questioning and when he didn’t show up was found dead in his truck in the underground car park of the hotel. Doesn’t sound like someone that wanted to end it. Maybe I’m wrong but I wouldn’t book a room to go to court and then on a whim decide to end it.
They should investigate the coroner asap.