10 fatalities

Fatal Cabin Fire and Crash in Chiapas, Mexico

San Cristóbal de Las Casas, MexicoFlight

On May 18, 1979, a Douglas DC-4 operated by Bush Aviation was involved in an aviation accident near San Cristóbal de Las Casas, Mexico in flight. 10 people were killed. 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)Primary reportUpdated 2026-06-12Data APIEditorial standards

An in-flight cabin fire forced a crew to attempt an emergency landing after losing control. The aircraft crashed in flames in an uninhabited area near San Cristóbal de Las Casas, killing all 10 occupants.

Incident Overview and Outcome An in-flight fire broke out in the cabin of an aircraft, prompting the crew to reduce altitude and attempt an emergency landing. During the maneuver, control of the aircraft was lost, leading to a fatal crash. The aircraft impacted an uninhabited area in the region of San Cristóbal de Las Casas, Chiapas, and was destroyed in the resulting flames. All 10 people on board were killed in the accident, including two Swiss citizens. No further details regarding the aircraft type, registration, operator, or specific date were provided in the source material. ## Operational Context The source indicates that the cabin fire was the initiating event that forced the crew to lower the aircraft's altitude. The subsequent loss of control during the emergency landing attempt resulted in the crash. The accident occurred in an uninhabited area, and the aircraft was completely destroyed. The fatalities included all occupants, with two identified as Swiss nationals.