Sepahan Airlines Flight 5915 was a scheduled domestic passenger flight from Iranian capital Tehran Mehrabad International Airport to Tabas, South Khorasan Province, Iran. On 10 August 2014, the HESA IrAn-140 twin turboprop serving the flight crashed shortly after takeoff from Mehrabad International Airport, falling into a boulevard near the Azadi Stadium. Of the 42 passengers and six crew on board, 40 people died. Iran's Civil Aviation Organization mainly attributed the crash to mechanical error. The aircraft suffered a malfunction on one of its engines shortly after take-off. Mismanagement of the emergency by the crew caused the aircraft to lose altitude rapidly, causing it to crash onto a boulevard. Subsequently, investigators also blamed the confusing Aircraft Flight Manual (AFM) that caused the crew to over-estimate the maximum take-off weight. Accident Sepahan Airlines Flight 5915 was scheduled to fly to Tabas, a major city in South Khorasan Province from Iranian capital Tehran. The aircraft was carrying 42 passengers and 6 crew members. 2 Sepahan Airlines off-duty mechanics were listed as passengers. Flight 5915 took off from Tehran's Mehrabad International Airport from Runway 29L at 09:22 a.m local time. Just 2 seconds prior to its rotation, a malfunction occurred on the right engine. The crew immediately declared an emergency and asked to return to the airport with an immediate left turn. As the co-pilot kept reporting on the engine failure to the tower, the aircraft stalled. It kept descending rapidly to the right. The right wing then contacted trees and the ground. The aircraft crashed onto trees and broke into pieces. It crashed in a residential block near Mina Glass Boulevard in western Tehran. The impact ruptured the fuel lines, causing the aircraft to erupt in flames. The engines and the wings detached. The aircraft then hit a concrete wall on the side of the boulevard and exploded. The tail of the aircraft then flung onto the boulevard. The airport's emergency response team was immediately notified. However, due to miscommunication and poor coordination, the team didn't reach the crash site in a timely manner. At least 11 passengers were extricated alive from the wreckage and were taken to local hospitals, all of whom were in serious condition. 3 passengers later succumbed to their injuries, leaving only 8 survivors. A total of 40 passengers and crews were killed in the crash. Aircraft The aircraft, an Antonov An-140, was manufactured in 2008 and was completed