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Last updated: 18 September 2021
Statuts:Enquête Officielle
Date:samedi 21 juillet 1984
Heure:13:40 AST
Type/Sous-type:Silhouette image of generic DHC6 model; specific model in this crash may look slightly different
de Havilland Canada DHC-6 Twin Otter 300
Compagnie:South Pacific Island Airways - SPIA
Immatriculation: N43SP
Numéro de série: 669
Année de Fabrication: 1980
Moteurs: 2 Pratt & Whitney Canada PT6A-27
Equipage:victimes: 0 / à bord: 3
Passagers:victimes: 1 / à bord: 11
Total:victimes: 1 / à bord: 14
Dégats de l'appareil: Perte Totale
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:Tau Airport (TAV) (   Samoa américaines)
Phase de vol: A l'atterrissage (LDG)
Nature:Transport de Passagers Nat.
Aéroport de départ:Pago Pago International Airport (PPG/NSTU), Samoa américaines
Aéroport de destination:Tau Airport (TAV), Samoa américaines
Numéro de vol: 513
Détails:
While turning from base leg onto final approach the fight controls suddenly collapsed forward and the nose of the aircraft pitched up. The pilot tried to maintain control by using throttle and flap control. The Twin Otter then collided with the terminal building and a vehicle. It appeared that the elevator control cable was rusted and broken at Station 376 and the cable pulley in the area was also damaged. The cable hadn't been inspected for 725.9 hours, while inspection is required every 700 hours. The corrosion process was speeded up by the fact that the aircraft was operated in a high humidity and marine salt environment. The aircraft had also carried large amounts of salt pork and corned beef in the aft cargo compartment, directly above the corroded cable area.

Probable Cause:

PROBABLE CAUSE:
"Flight control system ,elevator control .. corroded
Flight control system ,elevator control .. failure, total"

Sources:
» NTSB


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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 Pago Pago International Airport et Tau Airport est de 129 km (81 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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