53 fatalities

Four-engine aircraft crashes into Mt El Tablazo near Bogotá (C-114)

Mt El Tablazo en Supatá, ColombiaFlight

On February 15, 1947, a Douglas DC-4 (registration C-114) operated by Avianca was involved in an aviation accident near Mt El Tablazo en Supatá, Colombia in flight. 53 people were killed. Investigators recorded the probable cause as: The crew began the descent prematurely and failed to maintain the minimum prescribed altitude. 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 2026-08-05Data APIEditorial standards

A four-engine aircraft struck a mountain slope near Bogotá during a descent in poor weather, resulting in the deaths of all 53 people on board.

What happened

The flight was approaching Bogotá-Techo under challenging meteorological conditions characterized by clouds and fog. During the descent phase, the aircraft encountered terrain at an altitude of 10,500 feet. The four-engine machine collided with the slope of Mt El Tablazo in Supatá, situated approximately 42 kilometers north of the city. Upon impact, the airframe disintegrated completely. At the time of the collision, the peak was obscured by cloud cover, and the aircraft struck the mountain roughly two meters below its summit. This incident resulted in 53 fatalities, marking it as the deadliest accident in civil aviation history at that time.

Findings

Investigations determined that the crew initiated the descent earlier than required. The primary contributing factor was the failure to adhere to the minimum prescribed altitude, leading to the controlled flight into terrain.

Probable cause

The crew began the descent prematurely and failed to maintain the minimum prescribed altitude.