Accident de Havilland Canada DHC-6 Twin Otter 300 N43SP, Saturday 21 July 1984
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Date:Saturday 21 July 1984
Type:Silhouette image of generic DHC6 model; specific model in this crash may look slightly different    
de Havilland Canada DHC-6 Twin Otter 300
Owner/operator:South Pacific Island Airways - SPIA
Registration: N43SP
MSN: 669
Year of manufacture:1980
Total airframe hrs:11281 hours
Engine model:Pratt & Whitney Canada PT6A-27
Fatalities:Fatalities: 1 / Occupants: 14
Other fatalities:0
Aircraft damage: Destroyed, written off
Location:Tau Airport (TAV) -   American Samoa
Phase: Landing
Nature:Passenger - Scheduled
Departure airport:Pago Pago International Airport (PPG/NSTU)
Destination airport:Tau Airport (TAV)
Confidence Rating: Accident investigation report completed and information captured
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.

"Flight control system ,elevator control .. corroded
Flight control system ,elevator control .. failure, total"




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