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Last updated: 19 January 2021
Status:Preliminary - official
Date:Tuesday 1 December 2020
Time:09:13
Type:Silhouette image of generic DHC6 model; specific model in this crash may look slightly different
de Havilland Canada DHC-6 Vistaliner 300
Operator:Air Sanga
Registration: P2-ASM
C/n / msn: 389
First flight: 1973-10-17 (47 years 2 months)
Total airframe hrs:48082
Cycles:83877
Engines: 2 Pratt & Whitney Canada PT6A-27
Crew:Fatalities: 0 / Occupants: 2
Passengers:Fatalities: 0 / Occupants: 7
Total:Fatalities: 0 / Occupants: 9
Aircraft damage: Substantial
Location:Wobagen Airstrip (   Papua New Guinea)
Phase: Takeoff (TOF)
Nature:Domestic Scheduled Passenger
Departure airport:Wobagen Airstrip, Papua New Guinea
Destination airport:Bak Airstrip (AYBB), Papua New Guinea
Narrative:
A de Havilland Canada DHC-6 suffered an airstrip excursion during takeoff from Wobagen Airstrip, Papua New Guinea.
That morning, the crew had flown to Wobagen on a passenger and cargo charter flight, landing at 08:47. Once on ground, the crew took passengers on board the aircraft and loaded cargo, to conduct a VFR charter flight to Bak Airstrip, located 3.8 nm north-east of Wobagen.
At about 09:13, upon reaching the threshold of strip 12, the captain, who was Pilot Flying, conducted a 180° turn and applied maximum power, transitioning from taxi into take-off roll.
The crew stated that after applying maximum power, the aircraft had a tendency to veer to the right. The captain tried to maintain the aircraft on centreline by using asymmetric thrust, however, as the aircraft accelerated down the strip, the tendency to veer right increased. About 154m down the strip, the aircraft began veering towards the right and tracked away from the centreline. As the aircraft passed the strip boundary (cone markers), with a recorded groundspeed of 40kt the crew aborted the take-off; power to idle and applied full brakes. The aircraft continued forward and veering right. Four seconds later, the aircraft impacted a drain.
The nosewheel subsequently separated from the fork causing the nose to drop and the nose gear subsequently collapsed. The momentum of the aircraft caused it to continue another 8m with the nose dragging across the ground before it impacted the right edge drain.

Wobagen Airstrip is a 600 m long airstrip (12/30) with a slope of 8° to the southeast. Landings are only permitted on runway 30, takeoffs only on runway 12.

Classification:
Runway excursion

Sources:
» PNG AIC


Photos

photo of DHC-6-Vistaliner-300-P2-ASM
accident date: 01-12-2020
type: de Havilland Canada DHC-6 Vistaliner 300
registration: P2-ASM
photo of DHC-6-Vistaliner-300-P2-ASM
accident date: 01-12-2020
type: de Havilland Canada DHC-6 Vistaliner 300
registration: P2-ASM
 

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 Wobagen Airstrip to Bak Airstrip as the crow flies is 7 km (4 miles).
Accident location: Approximate; accuracy within a few kilometers.

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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