A320, Tehran Mehrabad Iran, 2016

A320, Tehran Mehrabad Iran, 2016

Summary

On 13 August 2016, an Airbus A320 departed the side of the runway at low speed during takeoff from Tehran Mehrabad and became immobilised in soft ground. The Investigation found that the Captain had not ensured that both engines were simultaneously stabilised before completing the setting of takeoff thrust and that his subsequent response to the resulting directional control difficulties had been inappropriate and decision to reject the takeoff too late to prevent the excursion. Poor CRM on the flight deck was identified as including but not limited to the First Officer’s early call to reject the takeoff being ignored.

Description

On 13 August 2016, an Airbus A320 (EP-TTA) being operated by Atrak Airlines on a domestic passenger flight from Tehran Mehrabad to Hasheminejad as ATR 1943 failed to proceed aligned with the centreline of the 4,030 metre-long, 60 metre-wide runway 29 as it accelerated for takeoff and had departed the left side of the runway at low speed in night VMC and become immobilised in soft ground. The aircraft sustained only relatively minor damage despite an application of forward thrust after the aircraft had come to a stop which failed to move it. The 154 passengers were disembarked from the aircraft and returned to the terminal.

The aircraft where it stopped following the excursion. [Reproduced from the Official Report]

Investigation

An Investigation was carried out by the Aircraft Accident Investigation Board (AAIB) of the Iran Civil Aviation Organisation (CAO). Data from both the SSFDR and the CVR were successfully downloaded and used to assist the Investigation. The prevailing weather conditions were benign with an almost negligible tailwind component and had no effect on the event.

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