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Last updated: 22 October 2019
Statuts:Enquête Officielle
Date:jeudi 30 juillet 1998
Heure:11:05
Type/Sous-type:Silhouette image of generic D228 model; specific model in this crash may look slightly different
HAL/Dornier 228-201
Compagnie:Alliance Air
Immatriculation: VT-EJW
Numéro de série: 8075/HAL1007
Année de Fabrication: 1986
Equipage:victimes: 3 / à bord: 3
Passagers:victimes: 3 / à bord: 3
Total:victimes: 6 / à bord: 6
Victimes au sol:victimes: 3
Dégats de l'appareil: Perte Totale
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:Cochin Airport (COK) (   Inde)
Phase de vol: En montée initiale (ICL)
Nature:Transport de Passagers Nat.
Aéroport de départ:Cochin Airport (COK/VOCC), Inde
Aéroport de destination:Thiruvananthapuram International Airport (TRV/VOTV), Inde
Numéro de vol: 503
Détails:
The HAL-manufactured Dornier 228 was operating on a flight from Agathi to Thiruvananthapuram via Cochin.
The aircraft took off from runway 17 of Cochin Airport. After attaining a height of about 400 feet it was seen pitching up steeply to a near vertical attitude and thereafter appeared to perform a manoeuvre similar to a stall turn to the right
and crashed on the roof top of the Component Repair Shop (CRS) building of the Naval Aircraft Yard. After the impact the aircraft caught fire and was completely destroyed. Three persons working in CRS received fatal and six other persons received minor injuries.

Probable Cause:

PROBABLE CAUSE: "After take off the aircraft pitched up uncontrollably, stalled fell to its right and crashed. The uncontrollable pitch up was caused by sudden uncommanded downward movement of the Trimmable Horizontal Stabilizer leading edge. This was due to partial detachment of its 'actuator forward bearing support' fitting due non installation of required hi-lok fasteners. Poor aircraft maintenance practices at Short Haul Operations Department contributed to the accident. "

Sources:
» Civil aviation aircraft accident summary for the year 1998 (DGAC India)


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Plan
Ce plan montre l'aéroport de départ ainsi que la supposée destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Cochin Airport et Thiruvananthapuram International Airport est de 177 km (110 miles).
Accident location: Approximate; accuracy within a few kilometers.

Les informations ci-dessus ne représentent pas l'opinion de la 'Flight Safety Foundation' ou de 'Aviation Safety Network' sur les causes de l'accident. Ces informations prélimimaires sont basées sur les faits tel qu'ils sont connus à ce jour.
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