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Accident description
Last updated: 21 October 2017
Status:Final
Date:Monday 6 July 2009
Time:09:50
Type:Silhouette image of generic AN28 model; specific model in this crash may look slightly different
Antonov 28
Operator:El Dinder Aviation
Registration: ST-TYB
C/n / msn: IAJ 006-02
First flight: 1988
Total airframe hrs:2180
Cycles:2113
Engines: 2 Glushenkov TVD-10B
Crew:Fatalities: 0 / Occupants: 2
Passengers:Fatalities: 0 / Occupants: 0
Total:Fatalities: 0 / Occupants: 2
Airplane damage: Damaged beyond repair
Location:1,6 km (1 mls) W of Sarif-Umra Airstrip (   Sudan)
Phase: Approach (APR)
Nature:Cargo
Departure airport:El Fasher Airport (ELF/HSFS), Sudan
Destination airport:Sarif-Umra Airstrip, Sudan
Narrative:
An Antonov 28 ST-TYB, sustained substantial damage in an accident near Sarif-Umra, Sudan. Both pilots were injured.
The flight departed El Fasher Airport (ELF) at time 09:01, estimated time to arrive at destination Sarif-Umra at 09:50. The airplane transported 1511 kg of food stuff destined for the UNAMID forces.
During the approach to Sarif-Umra the crew detected that the airstrip 23/05 was clear, dry and the wind was favourable at 230. As the crew established a speed of 210 km/h at an altitude of 60 meters on final approach, they saw a dust devil storm on their right crossing the airstrip. To avoid this phenomena, they decided to go around for another approach. The crew started a right turn and applied full power to gain height, but they felt that there was no response from the engines and the aircraft was influenced by a wind shear and began to sink.
The crew managed to control the aircraft, but the altitude decreased rapidly. At time 09:50 the aircraft impacted with the ground and rolled, thereafter struck a small rock and bounced, finally the aircraft impacted the ground on the left main gear and nose, and stopped at a distance of 1850 meters from the beginning of the airstrip.

Probable Cause:

CAUSES: "The unexpected weather phenomena at destination, and environmental conditions, wind shear and CB down drafts caused the accident."

Classification:
Windshear/downdraft
Loss of control

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Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from El Fasher Airport to Sarif-Umra Airstrip as the crow flies is 219 km (137 miles).

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