An Atrak Air Airbus A320, operarting flight 1943, suffered a runway excursion incident at Tehran-Mehrabad Airport’s runway 29L in Iran. The aircraft swerved right, then left and departed the left side of the runway, coming to rest on the grass beside the runway. Probable Cause: The IRI CAO Aircraft incident Investigation Board determines that the probable cause of this accident was the pilot failure to set engine power to take off power without initial stabilization on both engine parameters and also timely manner to safely aborting take-off and stop the aircraft after rolling, which resulted in a runway excursion. This failure occurred because the pilots? lack of attention with the aircraft FCOM. Contributive factors: – Failure of the airline to provide its pilots with clear and consistent guidance and training regarding company policies and procedures related to engine stabilization before take-off roll and SOP review. – Lack of cockpit management (CRM) for task sharing and decision making.