AN-28 Accident at Sarif-Umra Aerodrome (ST-TYB)

Flight Details and Departure On 6 July 2009, an AN-28 with registration ST-TYB departed Al Fashir aerodrome at 0601 UTC. The flight carried two crew members and 1,511 kg of food supplies for UNAMID forces. The aircraft's calculated takeoff weight was 6,335 kg, and its intended flight level was 085 under VFR, later re-cleared to FL105. The fuel endurance was 3.5 hours, and the center of gravity was within limits. ## Approach and Accident Sequence The aircraft proceeded normally to Sarif-Umra at FL105. During the initial descent at 250 km/h, the crew observed the runway was clear, dry, and the wind was favorable for runway 23/05. As the aircraft established 210 km/h at 60 meters on final approach, the crew sighted a dust devil crossing the runway. To avoid it, they initiated a go-around with a right turn and full power. The crew reported that the engines did not respond as expected and the aircraft encountered wind shear, causing it to sink. Despite their efforts to control the aircraft, its altitude decreased rapidly. At 0650 UTC, the aircraft impacted the ground, rolled, struck a small rock, and bounced. It finally came to rest with its left main gear and nose on the ground, 1,850 meters from the beginning of runway 05 at coordinates N 13 29.527, E 023 16.794. ## Outcome Both crew members were safe. The aircraft sustained substantial damage. Eyewitnesses confirmed the presence of the dust devil storm at the time the aircraft commenced its final approach.