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Fatal Mountain Strike Near Plateau des Glières (F-BIEL)

Usillon, FranceFlight

On February 7, 1986, a Pilatus PC-6 (Porter & Turbo Porter) (registration F-BIEL) operated by Air Savoie was involved in an aviation accident near Usillon, France in flight. One person was killed. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A).

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 2026-06-11Data APIEditorial standards

A sole pilot was killed when a single-engine aircraft struck a mountain slope near the Plateau des Glières in the Usillon region during a positioning flight from Courchevel Altiport to Geneva-Cointrin Airport in poor weather.

Incident Overview and Route Details A single-engine aircraft was involved in a fatal accident while operating a positioning flight. The pilot was the sole person on board at the time of the incident. The flight originated at Courchevel Altiport and was intended for Geneva-Cointrin Airport. ## Accident Circumstances During the en route phase of the flight, the pilot encountered poor weather conditions. The aircraft subsequently struck the slope of a mountain located near the Plateau des Glières, in the region of Usillon. ## Casualties The pilot was killed in the accident. No other persons were on board.

Controlled flight into terrain

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