Event Description
On takeoff from runway 36 at Medellín-José María Córdova Airport, which was conducted in rainfall, the crew received an Engine Gas Temperature (EGT) warning light for engines number 1 and 4 during the takeoff roll. Simultaneously, engine number 1 encountered technical problems. In response, the captain decided to abort the takeoff and initiated an emergency braking maneuver. However, the aircraft's speed was 12 knots above the V1 speed at the time of abort. The aircraft was unable to stop within the remaining runway distance, overran the end, lost its nose gear, and came to rest approximately 150 meters beyond the runway. All five crew members evacuated safely. The aircraft sustained damage beyond repair.
Probable Cause
The official investigation determined the probable cause to be the decision of the crew to abandon the takeoff procedure at a speed 12 knots above V1 on a wet runway surface, following an EGT warning on engines number 1 and 4. Contributing factors included the crew's failure to consider the wet runway factor in takeoff performance calculations, the absence of a properly certified and qualified flight dispatcher for the equipment, and an undetermined failure of engine number 1.