Accident Overview
An aircraft departed under low ceiling, low visibility, and night conditions. Shortly after takeoff, the aircraft impacted a reservoir. Radar data analysis indicated the aircraft was in a 45-degree descending turn at the time of impact.
Aircraft and Systems Examination
Examination of the aircraft's trim system revealed it was set for level flight. No voice or flight data recorder was installed onboard. A review of air traffic control communications showed that the captain was handling communications, allowing the first officer to perform the flying duties.
Inspection of the wreckage found no evidence of powerplant or system failures. However, the stall augmentation system (SAS) warning light was illuminated, the SAS switch was in the off position, and no SAS system malfunction could be identified.
Crew and Company Factors
Witnesses reported that before the flight, the captain had complained of illness but nevertheless reported for duty. Company records indicated instances of substandard performance by the first officer. The investigation found that company oversight of training and operations was lacking, and there was inadequate supervision by the Federal Aviation Administration (FAA).