Fokker 100 accident at Almaty Airport (UP-F1007)

Incident Overview and Flight Details A Fokker 100 operated by Beck Air JSC departed Almaty Airport on a scheduled service to Astana-Nursultan Nazarbayev Airport. The aircraft, identified as flight Z92100, carried 93 passengers and a crew of five. During the takeoff roll on runway 05R with flaps set to zero, the crew initiated rotation after 36 seconds at a speed of 148 knots. ## Sequence of Events Immediately after liftoff, the aircraft exhibited abnormal lateral movement, rolling right by 5 degrees and then left by 19 degrees without an increase in indicated airspeed. At an altitude of 20 feet and a pitch angle of 14 degrees, the aircraft began to descend and struck the runway surface with the base of its tail. It continued rolling on its main landing gear for approximately 15 seconds with the nose gear still in the air. The aircraft subsequently lifted off again at 138 knots, and the crew retracted the landing gear. ## Crash and Impact While climbing at a pitch angle of 19 degrees, the aircraft lost speed to 130 knots and veered to the right. It belly-landed and slid for approximately 850 meters, breaching a perimeter fence and colliding with a two-story private building located 80 meters to the right of the extended runway centerline. The impact resulted in the destruction of the aircraft, though no fire occurred. ## Casualties and Official Findings The accident resulted in 12 fatalities, including the captain, and 47 injuries among the occupants, with 39 escaping unhurt. The official investigation determined that the probable cause was an asymmetrical loss of wing lift properties during takeoff, most likely due to the effect of ground icing. Contributing factors included the crew's potential failure to adequately inspect the aircraft's leading edges for ice, and the inadequacy of the operator's Flight Safety Management System in identifying and mitigating existing risks. The collision with the private structure further increased the severity of the consequences.