| Date: | Thursday 16 May 2013 |
| Time: | 08:33 |
| Type: |  de Havilland Canada DHC-6 Twin Otter 300 |
| Owner/operator: | Nepal Airlines |
| Registration: | 9N-ABO |
| MSN: | 638 |
| Year of manufacture: | 1979 |
| Total airframe hrs: | 32291 hours |
| Cycles: | 54267 flights |
| Engine model: | Pratt & Whitney Canada PT6A-27 |
| Fatalities: | Fatalities: 0 / Occupants: 21 |
| Aircraft damage: | Substantial, written off |
| Category: | Accident |
| Location: | Jomsom Airport (JMO) -
 Nepal
|
| Phase: | Landing |
| Nature: | Passenger - Scheduled |
| Departure airport: | Pokhara Airport (PKR/VNPK) |
| Jomsom Airport (JMO/VNJS) | |
| Investigating agency: | Nepal AAIC |
| Confidence Rating: |  Accident investigation report completed and information captured |
A DHC-6 Twin Otter passenger plane sustained substantial damage in a landing accident at Jomsom Airport (JMO), Nepal. Two crew members and one passenger sustained serious injuries.
The airplane departed Pokhara Airport (PKR) at 08:10 on a domestic flight to Jomsom. While descending towards the destination airport, the Jomsom controller reported that there was a south-westerly 8-12 knot wind with runway 24 in use.
During the approach the pilot in command took over the communication function of the copilot and contacted Jomsom Tower, requesting to use runway 06 instead of runway 24, despite the advice of the tower controller to use runway 24 to avoid tail wind effect in runway 06.
The tailwind component, exceeded the five knot tailwind limit stipulated in the companys standard operating procedure.
The airplane touched down 776 feet past the threshold of the 2,424-foot-long runway 06. It covered a distance of 194 feet on the airstrip and veered towards the grassland.
During the landing roll, when the aircraft was decelerating, the co-pilot had raised the flaps as per the existing practice of carrying out the after the landing checks."
The pilot in command added power to re-enter the runway. After running 705 feet on the grassland the airplane entered the runway again. Without making his intentions clear to the copilot, the pilot in command continued adding power for go around.
The accelerating aircraft gained insufficient speed and lift to take off and ran out of the runway 24 end, continued towards the river, hit the barbed fence and gabion wall with an initial impact and finally fell down onto the banks of Kaligandaki River.
The most probable cause of the accident is the inappropriate conduct of STOL procedure and landing technique carried out by the PIC, during the landing-phase and an endeavour to carry out take off again with no sufficient airspeed, no required lifting force and non availability of required runway length to roll.
Contributory factors to the occurrence is the absence of proper CRM in terms of communication, coordination and briefing in between crew members on intention and action being taken by PIC during pre and post landing phase.
Accident investigation:
 |
|
Sources:
eKantipur
Hemant Arjyal
The Himalayan Times
History of this aircraft
Other occurrences involving this aircraft
| 16 October 2011 | 9N-ABO | Nepal Airlines (on behalf of Tara Air) | 0 | Lukla Airport - VNLK | |
min |
| Taxiway excursion | ||||||
Location
Images:
photo (c) pm subedi; Jomsom Airport (JMO/VNJS); 16 May 2013
Revision history:
| Date/time | Contributor | Updates |
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