6 fatalities

Controlled Flight into Terrain: Special Flight Strikes Turrialba Volcano Near San José (411)

Mt Turrialba, Costa RicaFlight

On December 4, 1970, a Douglas C-47 Skytrain (DC-3) (registration 411) operated by Nicaraguayan Air Force - Fuerza Aérea - Ejercito de Nicaragua was involved in an aviation accident near Mt Turrialba, Costa Rica in flight. 6 people were killed. Investigators recorded the probable cause as: Controlled flight into terrain. 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)Source recordUpdated 2026-07-04Data APIEditorial standards

A special flight from Managua to Panama City struck the Turrialba volcano during approach to San José in poor visibility due to thunderstorms and heavy rain, killing all six occupants.

Incident Overview

A special flight operating from Managua to Panama City, carrying three civilian passengers and three crew members, was approaching San José, Costa Rica when it encountered deteriorating weather conditions. Thunderstorm activity and heavy rain reduced visibility significantly. During the approach, the airplane struck the slope of the Turrialba volcano, which has an elevation of 3,340 meters. The impact caused the aircraft to disintegrate, resulting in the destruction of the airplane. All six individuals on board—three passengers and three crew members—were killed.

Circumstances

The flight was conducted under special operational conditions. While on approach to San José, weather conditions worsened, with reports of thunderstorms and heavy rainfall. The poor visibility likely hindered the crew's ability to see the terrain. The airplane collided with the volcano's slope, leading to a catastrophic breakup. No further details about the aircraft type, registration, or operator are available from the investigation source.

Investigation Findings

The official investigation determined the probable cause of the accident to be controlled flight into terrain (CFIT). No additional causal factors or contributing elements were identified in the source material.

Aftermath

The accident resulted in the complete loss of the aircraft and fatalities for all six occupants. The investigation concluded without further elaboration on flight recorders, wreckage examination, or other specifics.

Frequently asked questions

What happened in the 4 Dec 1970 Douglas C-47 Skytrain (DC-3) accident near Mt Turrialba, Costa Rica?

A special flight from Managua to Panama City struck the Turrialba volcano during approach to San José in poor visibility due to thunderstorms and heavy rain, killing all six occupants.

Were there any fatalities in the 4 Dec 1970 Douglas C-47 Skytrain (DC-3) accident?

The accident was fatal, resulting in 6 fatalities.

What aircraft was involved and where did it happen?

The accident on 4 Dec 1970 involved a Douglas C-47 Skytrain (DC-3), registration 411, operated by Nicaraguayan Air Force - Fuerza Aérea - Ejercito de Nicaragua, at Mt Turrialba, Costa Rica.

What was the probable cause of the accident?

Controlled flight into terrain