Beschrijving:
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.
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.
» Nepali Times
» Hemant Arjyal
» SKYbrary
accident date: 16-02-2014
type: de Havilland Canada DHC-6 Twin Otter 300
registration: 9N-ABB
accident date: 16-02-2014
type: de Havilland Canada DHC-6 Twin Otter 300
registration: 9N-ABB
| Status: | Accident investigation report completed and information captured |
| Datum: | zondag 16 februari 2014 |
| Tijd: | 13:30 |
| Type: |  de Havilland Canada DHC-6 Twin Otter 300 |
| Luchtvaartmaatschappij: | Nepal Airlines |
| Registratie: | 9N-ABB |
| Constructienummer: | 302 |
| Bouwjaar: | 1971 |
| Aantal vlieguren: | 43947 |
| Aantal vluchten: | 74217 |
| Motoren: | 2 Pratt & Whitney Canada PT6A-27 |
| Bemanning: | slachtoffers: 3 / inzittenden: 3 |
| Passagiers: | slachtoffers: 15 / inzittenden: 15 |
| Totaal: | slachtoffers: 18 / inzittenden: 18 |
| Schade: | Vernield |
| Gevolgen: | Written off (damaged beyond repair) |
| Plaats: | 7 km (4.4 mijl) NW of Sandhikhark ( Nepal)
|
| Fase: | Kruisvlucht (ENR) |
| Soort vlucht: | Binnenlandse lijnvlucht |
| Vliegveld van vertrek: | Pokhara Airport (PKR/VNPK), Nepal |
| Jumla Airport (JUM/VNJL), Nepal | |
| Vluchtnummer: | 183 |
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:
 |
|
Bronnen:
» ekantipur.com» Nepali Times
» Hemant Arjyal
» SKYbrary
Veiligheidsmaatregelen
Nepal AAIC issued 11 Safety Recommendations
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Foto's
accident date: 16-02-2014
type: de Havilland Canada DHC-6 Twin Otter 300
registration: 9N-ABB
accident date: 16-02-2014
type: de Havilland Canada DHC-6 Twin Otter 300
registration: 9N-ABB
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 Pokhara Airport en Jumla Airport bedraagt 213 km (133 miles).
Accident location: Exact; as reported in the official accident report.
De afstand tussen Pokhara Airport en Jumla Airport bedraagt 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.
languages: 
Nepal
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DHC-6 Twin Otter
- 930+ built
- 272e ongeval
- 176e dodelijk ongeval
- 19e zwaarste ongeval (toen het plaatsvond)
- 20e zwaarste ongeval (op dit moment)
Nepal- 12e zwaarste ongeval (toen het plaatsvond)
- 14e zwaarste ongeval (op dit moment)
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