Runway Excursion, Semuwa Aviasi Mandiri (DHC 6-300 PK-SMS); Bandar Udara Beoga, Papua, KNKT.23.01.13.04

On 23 January 2023, a DHC-6-300 Twin Otter aircraft, registered PK-SMS was being operated by PT Semuwa Aviasi Mandiri (SAM Air) on an unscheduled passenger and cargo flight from Mozes Kilangin Airport (WAYY), Timika, Papua to Beoga Airstrip (WAVO), Puncak, Papua. The flight was conducted in accordance with Visual Flight Rules (VFR).

At 2149 UTC (0649 LT), in daylight condition, the aircraft departed from Timika to Beoga. On board the aircraft were two pilots, one engineer and eleven passengers. The Pilot in Command (PIC) acted as Pilot Flying (PF) and the Second in Command (SIC) acted as Pilot non-Flying (PNF). The flight until commenced approach was uneventful.

The aircraft landed on Runway 16, touched down about 240 meters from the beginning of the runway and veered to the right. The pilot attempted to manage directional control by applying left rudder and asymmetry engine power. The aircraft kept veered to the right then the pilot used the nose wheel steering.

The aircraft exited the runway, and travelled on the right runway shoulder. The right wing hit the trees near the runway shoulder during rolling and damaged the right wing. Afterward, the landing gear travelled on the soft soil and stopped on the right runway shoulder on heading about 114º.

The engine then shut down and the pilots, engineer and all the passengers evacuated the aircraft. No one injured in his occurrence.

At the time of issuing this investigation report, the KNKT had been informed of safety actions resulting from this occurrence taken by the aircraft operator.However, there is still safety issue to be considered, therefore, the KNKT issued safety recommendations to the aircraft operator.

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