Twin-Engine Aircraft Overrun and Crash at San Ramón Airport (CP-983)

Accident Overview and Sequence of Events During the takeoff roll on runway 16 at San Ramón Airport, a twin-engine aircraft veered off the runway to the left and continued parallel to it. After rotation, the undercarriage struck an embankment and then a tractor parked 50 metres further. The aircraft became out of control, crashed in a field, and was destroyed. All six occupants were killed. ## Official Probable Cause The official investigation attributed the accident to a combination of factors: the aircraft's total weight at the time of the accident was above the maximum takeoff weight (MTOW) for the existing flying conditions; the crew had encountered technical problems with the left engine prior to departure, which had been delayed several times, leading to a suspected malfunction of the left engine; both engines were not running during the final impact; and the copilot and the flight engineer were not qualified on this type of aircraft.