The job of investigating the crash was made difficult due to the aircraft having neither a
flight data recorder or
cockpit voice recorder. Shortly after the investigation was started, it was learned that Captain Sherer had been cited twice for unsafe flying. Records showed that had his license suspended for 15 days in 1979. The National Transportation Safety Board determined that the probable cause of the accident was "the captain’s inability to control the airplane in an attempt to recover from an asymmetric power condition at low speed following his intentional use of the beta mode of propeller operation to descend and slow the airplane rapidly on final approach for landing. Factors that contributed to the accident were an unstabilized visual approach, the presence of a departing DC-9 on the runway, the desire to make a short field landing, and the higher-than-normal flight idle fuel flow settings of both engines. The lack of fire-blocking material in passenger seat cushions contributed to the severity of the injuries." ==See also==