What happened
While performing a flight from Pontianak to Nanga Pinoh, the twin engine aircraft encountered adverse meteorological conditions. During the descent phase of the flight, the aircraft was operating under instrument meteorological conditions (IMC). While navigating through these low-visibility conditions, the plane impacted the slope of Mt Saran, situated approximately 48 km to the west of Nanga Pinoh.
The accident resulted in the deaths of all 11 occupants on board the aircraft.
Findings
Investigations into the crash determined that the primary factor leading to the accident was controlled flight into terrain.