I recently reviewed archive files held by the Los Angeles Superior Court regarding two lawsuits filed as a result of the accident during the filming of Flight of the Phoenix that killed Paul Mantz on July 8, 1965. There was much new information held by several documents in that file, particularly a chronology written by Paul Mantz's long time secretary, Martha Marchak, who was very involved in the preparations of the airplane and was on hand at Yuma, Arizona, during the filming. I have updated the Final Flight of the Phoenix page at http://www.aerovintage.com/phoenix.htm so anyone interested in that incident might want to read the updated account.
Martha Marchak, by the way, later became VP of Tallmantz Aviation and was married to Frank Pine in later years. She is also the sister of Ruth Marchak, who married Frank Tallman.