Accident description
Last updated: 30 October 2014
Status:Final
Date:Sunday 16 February 2014
Time:ca 13:30
Type:Silhouette image of generic DHC6 model; specific model in this crash may look slightly different
de Havilland Canada DHC-6 Twin Otter 300
Operator:Nepal Airlines
Registration: 9N-ABB
C/n / msn: 302
First flight: 1971
Total airframe hrs:43947
Cycles:74217
Engines: 2 Pratt & Whitney Canada PT6A-27
Crew:Fatalities: 3 / Occupants: 3
Passengers:Fatalities: 15 / Occupants: 15
Total:Fatalities: 18 / Occupants: 18
Airplane damage: Destroyed
Airplane fate: Written off (damaged beyond repair)
Location:7 km (4.4 mls) NW of Sandhikhark (   Nepal) show on map
Crash site elevation: 2192 m (7192 feet) amsl
Phase: En route (ENR)
Nature:Domestic Scheduled Passenger
Departure airport:Pokhara Airport (PKR/VNPK), Nepal
Destination airport:Jumla Airport (JUM/VNJL), Nepal
Flightnumber: 183
Narrative:
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.

Classification:
Loss of situational awareness
Controlled Flight Into Terrain (CFIT) - Mountain

Sources:
» ekantipur.com
» Nepali Times
» Hemant Arjyal

Official accident investigation report
investigating agency: Aircraft Accident Investigation Commission - Nepal
report status: Final
report number: Final report
report released:25-AUG-2014
duration of investigation:190 days (6.3 months)
download report: Final report on the accident investigation of 9N-ABB Twin Otter (DHC6/300) aircraft owned and operated by--Nepal Airlines Corporation at Dihidanda, Masinalek Arghakhanchi district, Nepal on 16 Februar (Nepal AAIC Final report)
cover

Follow-up / safety actions

Nepal AAIC issued 11 Safety Recommendations

Show all AD's and Safety Recommendations

Photos

photo of de Havilland Canada DHC-6 Twin Otter 300 9N-ABB
photo of de Havilland Canada DHC-6 Twin Otter 300 9N-ABB
Add your photo of this accident or aircraft
 

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).

languages: English Franšais Nederlands Deutsch Espanol

Share
Share

DHC-6 Twin Otter

  • 262nd loss
  • 844 built
  • 19th worst accident
safety profile

 Nepal
  • 12th worst accident
»safety profile