AP on today Senate hearings https://apnews.com/article/boeing-wh...7cd74b9ea264e3
AP article very helpfully includes link to [correction: letter to Boeing CEO from Chair and Ranking Member of Permanent Investigations Subcomm.] - which cites letter to FAA Admin. from Mr. Salehpour's attorney.
(FWIW, any attorney can slap a brief or pleading together but correspondence to official addressees and subject matter of high importance - something of a lost art in most offices, though fortunately for Mr Salehpour, not in his law firm representation.)