35 fatalities

1969-07-12: Douglas DC-3 (9N-AAP) — Royal Nepal Airlines — Hetauda, Nepal

Hetauda, NepalFlight

On July 12, 1969, a Douglas DC-3 (registration 9N-AAP) operated by Royal Nepal Airlines was involved in an aviation accident near Hetauda, Nepal in flight. 35 people were killed. Investigators recorded the probable cause as: The aircraft struck terrain because the crew could not see obstacles due to near-zero visibility caused by low cloud cover. 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.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 1781237383Data APIEditorial standards

A twin-engine airplane crashed into a hilltop tree during flight, resulting in the deaths of all 35 people on board.

What happened

During a flight through heavy cloud cover at an altitude of approximately 7,300 feet, a twin engine airplane collided with a tree situated atop a hill. The impact caused the aircraft to crash in the vicinity of the Sambri River, where it subsequently caught fire. There were no survivors of the accident; all 35 occupants perished in the crash.

Findings

Investigations into the accident determined that the primary cause was controlled flight into terrain. At the time of the collision, the crew was operating in conditions with zero visibility due to low-hanging clouds. These meteorological conditions prevented the flight crew from identifying the mountain and the surrounding terrain features before the impact occurred.

Probable cause

The aircraft struck terrain because the crew could not see obstacles due to near-zero visibility caused by low cloud cover.