Narrative:
The plane took off at 05:55 from Khartoum airport en route to Juba. En-route weather conditions were very bad (Thunderstorms, rain, hail, icing and turbulence). There was a huge thunderstorm to the right of track with small paths in between the CB clouds to the far left and right.
The pilot made a right turn which led him direct in the centre of an embedded CB, which was obscured by other clouds. The airplane encountered heavy turbulence, icing, hail and up and down draft which led to the failure of three engines No 1,3 and 4 except engine No. 2. The aircraft was flying at 5000 m, when it entered the thunderstorm. The flight entered a descent with 17.5 m/sec and an indicated air speed of 650-690 km/h. The aircraft lost 4200 m and afterwards lost another 600 m and it decreased the angle of descent.
The crew attempted to restart engine no. 3 and finally succeeded but a forest showed up ahead. The airplane struck a tree and crashed.
CAUSES:
- The three engines failure constitutes the main cause.
- Contributory factors:
o En-route bad weather and pilot visual entry into an embedded thunder storm.
o Un-serviceability or sudden failure of weather Radar.
o Accumulation of ice led to the blockage of the engines air intake assembly (IGVA).
o The nature of the impact area was forest, this caused the detachment of the aircraft parts. The running engine (No.2) caused the fire.
» 7 killed following crash of Cargo plane near Sudans Malakal (Sudan Tribune)
| Status: | Accident investigation report completed and information captured |
| Date: | Friday 27 June 2008 |
| Time: | 07:05 |
| Type: |  Antonov An-12BK |
| Operator: | Juba Air Cargo |
| Registration: | ST-ARN |
| MSN: | 8346010 |
| First flight: | 1968 |
| Total airframe hrs: | 14597 |
| Cycles: | 6924 |
| Engines: | 4 Ivchenko AI-20M |
| Crew: | Fatalities: 7 / Occupants: 8 |
| Passengers: | Fatalities: 0 / Occupants: 0 |
| Total: | Fatalities: 7 / Occupants: 8 |
| Aircraft damage: | Destroyed |
| Aircraft fate: | Written off (damaged beyond repair) |
| Location: | 46 km (28.8 mls) N of Malakal ( South Sudan)
|
| Phase: | En route (ENR) |
| Nature: | Cargo |
| Departure airport: | Khartoum-Civil Airport (KRT/HSSS), Sudan |
| Juba Airport (JUB/HSSJ), South Sudan | |
| Flightnumber: | 500 |
The plane took off at 05:55 from Khartoum airport en route to Juba. En-route weather conditions were very bad (Thunderstorms, rain, hail, icing and turbulence). There was a huge thunderstorm to the right of track with small paths in between the CB clouds to the far left and right.
The pilot made a right turn which led him direct in the centre of an embedded CB, which was obscured by other clouds. The airplane encountered heavy turbulence, icing, hail and up and down draft which led to the failure of three engines No 1,3 and 4 except engine No. 2. The aircraft was flying at 5000 m, when it entered the thunderstorm. The flight entered a descent with 17.5 m/sec and an indicated air speed of 650-690 km/h. The aircraft lost 4200 m and afterwards lost another 600 m and it decreased the angle of descent.
The crew attempted to restart engine no. 3 and finally succeeded but a forest showed up ahead. The airplane struck a tree and crashed.
Probable Cause:
CAUSES:
- The three engines failure constitutes the main cause.
- Contributory factors:
o En-route bad weather and pilot visual entry into an embedded thunder storm.
o Un-serviceability or sudden failure of weather Radar.
o Accumulation of ice led to the blockage of the engines air intake assembly (IGVA).
o The nature of the impact area was forest, this caused the detachment of the aircraft parts. The running engine (No.2) caused the fire.
Sources:
» Russian Foreign Ministry» 7 killed following crash of Cargo plane near Sudans Malakal (Sudan Tribune)
Follow-up / safety actions
AAICD issued 7 Safety Recommendations
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Photos
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 Khartoum-Civil Airport to Juba Airport as the crow flies is 1190 km (743 miles).
Accident location: Global; accuracy within tens or hundreds of kilometers.
Distance from Khartoum-Civil Airport to Juba Airport as the crow flies is 1190 km (743 miles).
Accident location: Global; accuracy within tens or hundreds of kilometers.
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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