On September 30, 1996, a De Havilland DHC-6 Twin Otter (registration PK-YPF) operated by Trigana Air Service was involved in an aviation accident near Ilaga, Indonesia during landing or approach. No fatalities were reported. Investigators recorded the probable cause as: The aircraft failed to stop on the runway due to reduced braking effectiveness on a wet surface during heavy rain. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 8 related events involving the same aircraft type or operator are linked below.
An aircraft overran the runway at Ilaga Airport during landing due to heavy rainfall and a wet surface, resulting in no injuries but significant damage.
What happened
During an approach to Ilaga Airport, the aircraft encountered challenging weather conditions characterized by intense rainfall. Upon touchdown on a runway surface made slippery by the rain, the pilot was unable to decelerate the aircraft sufficiently before the end of the paved area. Consequently, the aircraft overran the runway and traveled into an embankment.
Findings
The primary factor in the excursion was the wet runway surface caused by heavy precipitation.
The aircraft sustained damage that rendered it a total loss.
There were zero fatalities and zero injuries reported among the five occupants on board.
Probable cause
The aircraft failed to stop on the runway due to reduced braking effectiveness on a wet surface during heavy rain.