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Accident
Last updated: 21 October 2017
Estado:Final
Fecha:viernes 30 mayo 2014
Hora:ca 09:30
Tipo:Silhouette image of generic DH3T model; specific model in this crash may look slightly different
de Havilland Canada DHC-3T Texas Turbine Otter
Operador:Alaska Air Taxi
Registración: N3125N
Numéro de série: 394
Año de Construcción: 1960
Motores: 1 Garrett TPE331
Tripulación:Fatalidades: 0 / Ocupantes: 1
Pasajeros:Fatalidades: 0 / Ocupantes: 2
Total:Fatalidades: 0 / Ocupantes: 3
Daños en la Aeronave: Menor
Consecuencias: Repaired
Ubicación:cerca Homer, AK (   Estados Unidos de América)
Fase: En ruta (ENR)
Naturaleza:Privado
Aeropuerto de Salida:Sedona Airport, AZ (SDX/KSEZ), Estados Unidos de América
Aeropuerto de Llegada:Anchorage-Ted Stevens International Airport, AK (ANC/PANC), Estados Unidos de América
Descripción:
A de Havilland DHC-3T Turbine Otter airplane, experienced an anomalous in-flight vibration and uncommanded nose-down pitch during cruise flight in the vicinity of Homer, Alaska. The airplane sustained substantial damage to the right elevator. The flight departed Seldovia, Alaska, about 0900, en route to Anchorage, Alaska.

According to the pilot, during cruise flight, the airplane vibrated and subsequently pitched nose-down. The pilot applied corrections and continued the flight to the destination. After landing, the pilot and a mechanic examined the airplane and found that the skin on the right elevator servo tab was separated from the hinge, and spar structures inside the right elevator were cracked.


This same aircraft, N3125N, was involved in an accident on 4 June 2015, when during cruise flight, while applying back pressure to the control yoke, a vibration was felt. The pilot immediately reduced power and executed a precautionary landing. After landing it was found that the skin on the right elevator servo tab was fractured and separated from the hinge, and spar structures inside the right elevator were cracked.

Probable Cause:

PROBABLE CAUSE: "The flutter failure of the right elevator servo tab due to the improper fabrication of the servo tab and maintenance personnel’s subsequent failure to detect anomalies with the servo tab."

Fuentes:
» NTSB


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Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Sedona Airport, AZ to Anchorage-Ted Stevens International Airport, AK as the crow flies is 3950 km (2468 miles).

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