As NTSB Chairman , Rosenker ordered the 2006/2007 re-opening of the controversial 1967 investigation of Piedmont Airlines Flight 22 . In the official petition for reconsideration , Paul Houle ( an amateur historian who asked for the investigation to be reopened ) suggested that numerous important facts were missing from the original investigation , as well as apparent potential conflicts of interest that should have been found at the time . Despite the cockpit voice recorder conflicting with the original NTSB report , the NTSB 's Office of Aviation Safety found no compelling reason to make any changes to the report . Rosenker subsequently wrote to Houle , sharing the Board 's findings upholding the probable cause and contributing factors as presented in the original NTSB report
Piedmont Airlines Flight 22
Piedmont Airlines Flight 22
Mark Rosenker