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Accident
Last updated: 17 October 2017
Estado:Final
Fecha:domingo 16 febrero 2014
Hora:ca 13:30
Tipo:Silhouette image of generic DHC6 model; specific model in this crash may look slightly different
de Havilland Canada DHC-6 Twin Otter 300
Operador:Nepal Airlines
Registración: 9N-ABB
Numéro de série: 302
Año de Construcción: 1971
Horas Totales de la Célula:43947
Ciclos:74217
Motores: 2 Pratt & Whitney Canada PT6A-27
Tripulación:Fatalidades: 3 / Ocupantes: 3
Pasajeros:Fatalidades: 15 / Ocupantes: 15
Total:Fatalidades: 18 / Ocupantes: 18
Daños en la Aeronave: Destruido
Consecuencias: Written off (damaged beyond repair)
Ubicación:7 km (4.4 milles) NW of Sandhikhark (   Nepal)
Elevación del lugar del accidente: 2192 m (7192 feet) amsl
Fase: En ruta (ENR)
Naturaleza:Vuelo Doméstico Programado
Aeropuerto de Salida:Pokhara Airport (PKR/VNPK), Nepal
Aeropuerto de Llegada:Jumla Airport (JUM/VNJL), Nepal
Número de Vuelo: 183
Descripción:
A de Havilland Canada DHC-6 Twin Otter operated by Nepal Airlines was destroyed when it impacted a mountainside near Sandhikhark, Nepal. All 18 on board sustained fatal injuries.
Flight RA183 was a domestic flight from Kathmandu to Jumla with a refueling stop at Pokhara. The airplane took off from Pokhara at 12:43. Upon leaving Pokhara Control Zone, the pilot in command realized that the direct track was not possible due weather and decided to proceed via a more southern track. During the flight the pilots were experiencing uncomfortable flying environment due to unfavorable weather conditions. Attempting to avoid the weather, the pilots had to fly up and down and changing the heading. Finally being unable to penetrate the weather ahead, the captain decided to divert to Bhairahawa, the nearest airport. However, the captain did not take into consideration the surrounding terrain and continued descent turning right.
The aircraft initially slashed a small tree and finally impacted a ridge. Due to the heavy impact the left wing was first disintegrated and then the front part of the aircraft toppled over beyond the ridge with several subsequent impacts.

The cockpit voice recorder showed that the copilot had warned the captain not to descend or turn.
The wreckage was located the following morning at an altitude of 7190 feet (2192 m). There were no surivors.

Probable Cause:

Causes:
After detail investigation and thorough analysis of the circumstances and evidences, the Commission has determined that the most probable causes of the accident is the
"Losing situational awareness on the part of PIC while flying into instrument meteorological weather condition to the extent of Collision with terrain."
The contributing factors to the occurrence are;
- Deteriorated weather associated with western disturbance, unstable in nature and embedded CB.
- Inappropriate and insufficient crew coordination while changing course of action.

Accident investigation:
cover
Investigating agency: AAIC Nepal
Status: Investigation completed
Duration: 190 days (6 months)
Accident number: Final report
Download report: Final report

Fuentes:
» ekantipur.com
» Nepali Times
» Hemant Arjyal
» SKYbrary 


Subsiguiente / acciones de seguridad

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photo of de Havilland Canada DHC-6 Twin Otter 300 9N-ABB
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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 Pokhara Airport to Jumla Airport as the crow flies is 213 km (133 miles).
Accident location: Exact; as reported in the official accident report.

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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DHC-6 Twin Otter

  • 930+ built
  • 270th loss
  • 176th accidente fatal
  • 19th worst accident (a la hora)
  • 20th worst accident (actualmente)
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 Nepal
  • 12th worst accident (a la hora)
  • 13th worst accident (actualmente)
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