On 23 December 2022, a DHC-6-300 Twin Otter aircraft, registered PK-OTY was being operated by PT. Rimbun Abadi Aviasi (Rimbun Air) on an unscheduled passenger and cargo flight.

At 0405 UTC (1305 LT), on daylight condition, the aircraft departed from Mozes Kilangin Airport, Timika (WAYY), Timika to Moanamani Airport (WABD), Dogiyai . On board the aircraft was 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).

At 1337 UTC, the PNF reported to Moanamani Info officer that the aircraft was on final. The Moanamani Info officer looked for the aircraft and found that the PK-OTY was on final Runway 03. The Moanamani Info officer then advised PK-OTY that the wind was seven knots, and the Runway 03 was clear.

At 1338 LT, the aircraft touched down Runway 03 and the PF set the propeller levers to reverse position following the application of the brake pedals for few seconds. Shortly after, the PF noticed that the aircraft slightly veered to the right moved away from the runway centerline.

The PF then attempted to recover the aircraft by applying the left rudder and the aircraft was slightly veer to the left until the aircraft heading parallel with the runway centerline. When the aircraft 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 moved out from runway pavement and impacted airport fence. The right main wheel slipped into a ditch, the nose wheel collapsed, and the aircraft stopped. The pilots evacuated from the left cockpit door while the engineer evacuated from the left cabin door.

The Transportation Safety Board of Canada (TSB) as the State of Engines and Airframe Design and Manufacture was involved in this investigation. TSB had appointed accredited representative to assist the investigation in accordance with the provisions in International Civil Aviation Organization (ICAO) Annex 13.

At the time of issuing this investigation report, the KNKT had not been informed of any safety actions resulting from this occurrence. KNKT issued safety recommendations to the aircraft operator to address safety issues identified in this report.

The investigation is continuing, should any further relevant safety issues emerge during the course of the investigation, KNKT will immediately bring the issues to the attention of the relevant parties and publish as required.