First flight of a fenestron equipped helicopter (on an SA.340)

Friday, April 12, 1968



The fenestron (or 'fan-in-fin') is a shrouded type tail rotor. It first flew on the second prototype of the  Sud-Aviation SA.340, which would become the SA.341 in production. The first prototype flew with a conventional tail rotor.

Source: "The Development of French Helicopters", Jean Boulet, VERTIFLITE May/June 1984, Page 91



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