Accident
Last updated: 21 December 2014
Status:Definitief
Datum:vrijdag 27 juni 2008
Tijd:07:05
Type:Silhouette image of generic AN12 model; specific model in this crash may look slightly different
Antonov 12BK
Luchtvaartmaatschappij:Juba Air Cargo
Registratie: ST-ARN
Constructienummer: 8346010
Bouwjaar: 1968
Aantal vlieguren:14597
Aantal vluchten:6924
Motoren: 4 Ivchenko AI-20M
Bemanning:slachtoffers: 7 / inzittenden: 8
Passagiers:slachtoffers: 0 / inzittenden: 0
Totaal:slachtoffers: 7 / inzittenden: 8
Schade: Vernield
Gevolgen: Written off (damaged beyond repair)
Plaats:46 km (28.8 mijl) N of Malakal (   Zuid Sudan) show on map
Fase: Kruisvlucht (ENR)
Soort vlucht:Vracht
Vliegveld van vertrek:Khartoum-Civil Airport (KRT/HSSS), Soedan
Vliegveld van aankomst:Juba Airport (JUB/HSSJ), Zuid Sudan
Vluchtnummer: 500
Beschrijving:
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 5000m, 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 after wards lost another 600 m and it decreased the angle of descent.
The crew attempted to restart engine nr. 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.

Bronnen:
» Russian Foreign Ministry
» 7 killed following crash of Cargo plane near Sudan’s Malakal (Sudan Tribune)


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Kaart
Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen Khartoum-Civil Airport en Juba Airport bedraagt 1190 km (743 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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