What happened
During a nighttime departure characterized by low visibility and a low cloud ceiling, the aircraft struck a reservoir. Radar analysis conducted during the investigation revealed that the flight was executing a 45-degree descending turn at the time of impact. While no voice or flight data recorders were present on the aircraft to provide cockpit audio, air traffic control communications indicated that the captain was handling radio duties, leaving the first officer in command of the flight controls.
All 12 fatalities occurred during the accident. Physical inspections of the wreckage showed no evidence of engine or mechanical system failures. The aircraft's trim system had been set for level flight prior to the crash.
Findings
Investigators identified several critical factors involving crew management and oversight. Although there was no malfunction found within the stability augmentation system (SAS), evidence indicated that the SAS warning light was active and the system switch had been set to the off position.
Additional findings highlighted human factors and organizational deficiencies. Prior to the flight, the captain had reportedly expressed feeling unwell but proceeded to report for duty. Furthermore, company records noted a history of poor performance by the first officer. The investigation concluded that the accident was exacerbated by inadequate oversight of training and operations by the company, as well as insufficient supervision by the FAA.