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Last updated: 22 September 2021
Status:Definitief
Datum:zaterdag 21 juli 1984
Tijd:13:40 AST
Type:Silhouette image of generic DHC6 model; specific model in this crash may look slightly different
de Havilland Canada DHC-6 Twin Otter 300
Luchtvaartmaatschappij:South Pacific Island Airways - SPIA
Registratie: N43SP
Constructienummer: 669
Bouwjaar: 1980
Motoren: 2 Pratt & Whitney Canada PT6A-27
Bemanning:slachtoffers: 0 / inzittenden: 3
Passagiers:slachtoffers: 1 / inzittenden: 11
Totaal:slachtoffers: 1 / inzittenden: 14
Schade: Afgeschreven
Gevolgen: Written off (damaged beyond repair)
Plaats:Tau Airport (TAV) (   Amerikaans Samoa)
Fase: Landing (LDG)
Soort vlucht:Binnenlandse lijnvlucht
Vliegveld van vertrek:Pago Pago International Airport (PPG/NSTU), Amerikaans Samoa
Vliegveld van aankomst:Tau Airport (TAV), Amerikaans Samoa
Vluchtnummer: 513
Beschrijving:
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"

Bronnen:
» NTSB


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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 Pago Pago International Airport en Tau Airport bedraagt 129 km (81 miles).
Accident location: Approximate; accuracy within a few 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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