ASN Aircraft accident Antonov An-12BK ST-AQQ Heglig Airport
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Status:Accident investigation report completed and information captured
Date:Monday 4 January 2010
Type:Silhouette image of generic AN12 model; specific model in this crash may look slightly different
Antonov An-12BK
Operator:El Magal Aviation
Registration: ST-AQQ
MSN: 9346504
First flight: 1969
Total airframe hrs:36190
Engines: 4 Ivchenko AI-20M
Crew:Fatalities: 0 / Occupants: 6
Passengers:Fatalities: 0 / Occupants: 0
Total:Fatalities: 0 / Occupants: 6
Aircraft damage: Damaged beyond repair
Location:Heglig Airport (   Sudan)
Phase: Landing (LDG)
Departure airport:Khartoum-Civil Airport (KRT/HSSS), Sudan
Destination airport:Heglig Airport (HEG/HSHG), Sudan
Flightnumber: 100
An Antonov 12B, ST-AQQ, sustained substantial damage in a landing accident at Heglig, Sudan. The airplane suffered an undercarriage collapse and damage to the no. 1, 2 and 4 propellers. There were no injuries.
Magal Flight 100 departed Khartoum (KRT), Sudan at 07:38 with 13 tons of cargo on board, bound for Heglig, Sudan.
The airplane touched down on the gravel, 16 meters short of the runway. It struck concrete blocks, runway lights and then bounced. It impacted the runway nose-first. The captain ordered the props to be unlocked so they would go into ground fine pitch. However, the throttle of engine no. 4 was still at 42% with the other engines below 20%.
An asymmetric thrust condition occurred as the no. 4 engine consequently did not go into ground fine pitch. This caused the plane to drift to the left side. It passed over a gravel road, then lost the left main landing gear, turned to left and broke the right hand main landing gear and nose gear before it stopped.

Probable Cause:

Main Cause:
1- Landing short of the runway beginning.
2- The flight engineer unlocked props I, II, III at throttle position < 20° UPRT and No IV engine at 40° UPRT.
Contributory Cause:
- Unrectification of nose wheel and main landing gear crack as recommended by the manufacturer.

Runway excursion (veer-off)

Follow-up / safety actions

AAICD issued 10 Safety Recommendations

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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 Khartoum-Civil Airport to Heglig Airport as the crow flies is 706 km (441 miles).

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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Antonov An-12

  • 1243 built
  • 230th loss
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  • 27th worst accident (at the time)
  • 33rd worst accident (currently)
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