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.
John Oliver’s Boeing broadcast last week included a video of a guy walking around a Boeing production floor asking all the people if any of them would be willing to fly in a Boeing. Of everyone he asked a single guy said yes and then followed it up with “but I kind of have a death wish.”
There were more yes’s, but they were cut out of the video. However, Oliver mentions after the video what amount of them said yes and what amount said no. Most of them did say “no” though.
