A140, vicinity Tehran Mehrabad Iran, 2014

A140, vicinity Tehran Mehrabad Iran, 2014

Summary

On 10 August 2014, one of the engines of an Antonov 140-100 departing Tehran Mehrabad ran down after V1 and prior to rotation. The takeoff was continued but the crew were unable to keep control and the aircraft stalled and crashed into terrain near the airport. The Investigation found that a faulty engine control unit had temporarily malfunctioned and that having taken off with an inappropriate flap setting, the crew had attempted an initial climb with a heavy aircraft without the failed engine propeller initially being feathered, with the gear remaining down and with the airspeed below V2.

Description

On 10 August 2014, the Number 2 engine of an Antonov 140-100 (EP-GPA) being operated by Sepahan Airlines from Tehran Mehrabad to Tabas as flight 5915 failed just as the aircraft was about to become airborne from runway 9L. Once airborne, the aircraft was seen to diverge to the right of the runway centreline but reached only a low height before descending, right wing down, and crashing within a nearby industrial complex. The effects of the impact and a post crash fire destroyed the aircraft and 40 of the 48 occupants, including all 6 crew members, died at the time of the crash or subsequently from the injuries sustained in it. The remaining 8 occupants sustained serious injuries but survived. Some collateral damage to structures and trees at the crash site occurred.

Investigation

An Investigation was carried out by the Iran Civil Aviation Organisation (CAO) Accident Investigation Board (AAIB). The CVR and FDR were recovered and their data were successfully downloaded and used to assist the Investigation. It was noted that the prevailing weather conditions had been good and had not had any direct bearing on accident causation.

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