6 fatalities

Fatal aircraft impact on Mount Nang Keo (12251)

Mt Nang Keo, ThailandFlight

On March 24, 1970, a De Havilland DHC-4 Caribou (registration 12251) operated by Royal Thai Police (Tamruat Haeng Chat) was involved in an aviation accident near Mt Nang Keo, Thailand in flight. 6 people were killed. Investigators recorded the probable cause as: The aircraft struck the slope of Mt Nang Keo during a mission for the Royal Thai Border Police. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 3 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Source recordUpdated 2026-06-14Data APIEditorial standards

An aircraft operating for the Royal Thai Border Police crashed into a mountainside, resulting in no survivors.

What happened

During an operational mission conducted for the Royal Thai Border Police, an aircraft collided with the terrain at Mt Nang Keo. The impact occurred while the plane was navigating the mountainous region, leading to a high-speed collision with the slope.

All six individuals on board the aircraft lost their lives in the accident. There were no survivors recovered from the wreckage following the crash event.

Findings

No specific technical failures or external factors were detailed regarding the impact, though the primary factor was the collision with the mountain slope during the mission.

Probable cause

The aircraft struck the slope of Mt Nang Keo during a mission for the Royal Thai Border Police.

Frequently asked questions

What happened in the 24 Mar 1970 De Havilland DHC-4 Caribou accident near Mt Nang Keo, Thailand?

An aircraft operating for the Royal Thai Border Police crashed into a mountainside, resulting in no survivors.

Were there any fatalities in the 24 Mar 1970 De Havilland DHC-4 Caribou accident?

The accident was fatal, resulting in 6 fatalities.

What aircraft was involved and where did it happen?

The accident on 24 Mar 1970 involved a De Havilland DHC-4 Caribou, registration 12251, operated by Royal Thai Police (Tamruat Haeng Chat), at Mt Nang Keo, Thailand.

What was the probable cause of the accident?

The aircraft struck the slope of Mt Nang Keo during a mission for the Royal Thai Border Police.