The NTSB published its report into the disaster on December 13, 1988. They found that the preliminary cause of the accident was the failure of the
flight crew to maintain a proper
flight path because of the improper instrument scanning by the first officer and the flight crew's response to a perceived fault in the
stall warning system. Contributing features were the lack of company response to documented indications of difficulties in the first officer's piloting, and the lack of FAA surveillance of
AVAir. In 1993, the Air Line Pilots Association (ALPA) filed a
petition against the findings of the investigation and asked it to be reconsidered. The NTSB accepted the petition in part. The causes of the crash were changed to: "The probable cause of this accident was the failure of flight crew to maintain a proper flightpath. Contributing factors were the ineffective management and supervision of flight crew training and operations and inappropriate FAA surveillance of AVAir." == Memorial ==