According to preliminary results, mechanical failure might have been a major contributing factor in the collision. According to reports, there were fuel system problems with the aircraft that had touchpal keyboardnot been sufficiently fixed before takeoff. Investigators also found inconsistencies in maintenance logs that presented questions regarding whether the right protocols had been followed during recent repairs. As part of the investigation, the aviator's mental health was also closely examined; friends and family interviews disclosed that he had been under a lot of stress before the flight.
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