26 fatalities

1950-07-29: Bristol 170 Freighter (F-BENF) — Compagnie Air Transport - CAT — Tanezrouft Desert, Algeria

Tanezrouft Desert, AlgeriaFlight

On July 29, 1950, a Bristol 170 Freighter (registration F-BENF) operated by Compagnie Air Transport - CAT was involved in an aviation accident near Tanezrouft Desert, Algeria in flight. 26 people were killed. Investigators recorded the probable cause as: The accident was probably caused by an explosion in the wing compartment containing the main starboard fuel tank. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 2 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 1781257810Data APIEditorial standards

An aircraft departed Aoulef Airfield for Bidon V, lost contact around 0300LT, and was found 30 hours later with debris scattered over 2 km. All 26 occupants died. Investigators believe an explosion in the left wing caused the wing to detach.

Departure and Loss of Contact

The aircraft departed Aoulef Airfield at 0245LT, bound for Bidon V. During the following 15 to 30 minutes, the crew maintained only a few radio contacts with ground stations. By approximately 0300LT, all communication had ceased.

Search and Discovery of Wreckage

Search and rescue (SAR) operations commenced promptly. The wreckage was located around 1815LT, about 30 hours after the loss of contact, by the crew of a GLAM Douglas DC-4. The debris field extended over more than 2 kilometers, situated approximately 50 kilometers west of the trail leading from Reggan to Bidon V, and about 106 kilometers southwest of Aoulef.

Occupants and Casualties

All 26 occupants on board were killed in the accident. Most of the passengers were locals from Bamako who had been studying in France and were returning home for vacations.

Observations and Findings

Examination of the wreckage indicated that an explosion occurred in the left wing during flight, most likely in the fuel tank. This explosion caused the left wing to detach from the aircraft. Under such conditions, the aircraft became uncontrollable. The exact cause of the detonation remains unknown.

The crew consisted of Captain Le Monigou 3 and two other crew members.

Probable cause

The accident was probably caused by an explosion in the wing compartment containing the main starboard fuel tank. This explosion tore off part of the upper wing surface which started a vibration of the wing structure which then caused multiple failures in flight.