No fatalities

Aircraft Crash Landing Due to Improper Aileron Cable Installation (CC-CBY)

Puerto Montt-El Tepual, ChileTakeoff (climb)

On December 5, 1969, a Douglas C-47 Skytrain (DC-3) (registration CC-CBY) operated by LAN Chile - Linea Aérea Nacional de Chile was involved in an aviation accident near Puerto Montt-El Tepual, Chile during takeoff. No fatalities were reported. Investigators recorded the probable cause as: The aileron control cables were not properly installed. 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 2026-06-12Data APIEditorial standards

An aircraft crash landed after its right wing dropped during takeoff, injuring three crew members. The official investigation found the aileron control cables were not properly installed.

Incident Overview and Outcome During the takeoff sequence, the aircraft completed a 500-meter ground run and reached an altitude of 10 meters before the right wing dropped. The right wingtip made contact with the ground, leading to a crash landing. All three crew members aboard sustained minor injuries, while the aircraft was damaged beyond repair. ## Official Investigation Findings The official accident investigation determined that the aileron control cables were not properly installed. This installation error was identified as the probable cause of the incident, leading to the loss of control during the initial climb phase.