ASN Aircraft accident de Havilland Canada DHC-6 Twin Otter 300 PK-OTY Moanemani Airport (ONI)
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Status:Information verified through authorities or other official sources.
Date:Friday 23 December 2022
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:Rimbun Air
Registration: PK-OTY
MSN: 702
First flight: 1980
Total airframe hrs:54741
Engines: 2 Pratt & Whitney Canada PT6A-27
Crew:Fatalities: 0 / Occupants: 2
Passengers:Fatalities: 0 / Occupants: 0
Total:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Location:Moanemani Airport (ONI) (   Indonesia)
Phase: Landing (LDG)
Departure airport:Timika-Moses Kilangin (Tembagapura) Airport (TIM/WAYY), Indonesia
Destination airport:Moanemani Airport (ONI/WABD), Indonesia
The DHC-6 Twin Otter aircraft, registered PK-OTY was being operated on an unscheduled passenger and cargo flight.
At 13:05 the aircraft departed from Timika on a flight to to Moanemani, Indonesia. On board the aircraft were two pilots and one engineer. The Pilot in Command (PIC) acted as Pilot Flying (PF) and the Second in Command (SIC) acted as Pilot non-Flying (PNF).
The flight to Moanemani was uneventful and it was cleared to land on runway 03. The Moanamani Info officer advised PK-OTY that the wind was seven knots.
At 13:38, the aircraft touched down on runway 03 and the PF set the propeller levers to reverse position following the application of the brake pedals for few seconds. Shortly afterwards, the PF noticed that the aircraft slightly veered to the right, moving away from the runway centerline. The PF then attempted to recover the aircraft by applying the left rudder and the aircraft slightly veered to the left until the aircraft headed parallel with the runway centerline.
When the aircraft was about to abeam the apron, the PF then felt that the aircraft skidded to the right and attempted to recover the aircraft by setting the left propeller lever to reverse position. The aircraft then veered off the runway pavement and impacted the airport fence. The right main wheel slipped into a ditch, the nose wheel collapsed, and the aircraft stopped.

Accident investigation:

Investigating agency: NTSC Indonesia
Status: Investigation ongoing
Accident number: KNKT.
Download report: Preliminary report

Runway excursion (veer-off)

Follow-up / safety actions

NTSC issued 2 Safety Recommendations

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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 Timika-Moses Kilangin (Tembagapura) Airport to Moanemani Airport as the crow flies is 107 km (67 miles).
Accident location: Exact; deduced from 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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