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What record does the civilian Gazelle SA 341G hold?
Short answer
Its mark isn't about speed: the SA 341G was the first helicopter certified for single-pilot instrument flight (IFR) operations. The two closed-circuit world speed records, 307 km/h over 3 km and 292 km/h over 100 km, were set by a Gazelle on 13 May 1967.

First in single-pilot IFR
The SA 341G became the first helicopter certified for single-pilot instrument flight rules (IFR) operations. That certification reflected its stability and handling characteristics. The first production variant of the Gazelle flew on 6 August 1971.
The 1967 speed records
On 13 May 1967, a Gazelle set two separate closed-circuit world speed records: 307 km/h over 3 kilometres and 292 km/h over 100 kilometres. At that point the programme was still in its prototype phase: the SA 340 had first flown on 7 April 1967, still with a conventional tail rotor, and the fenestron did not appear until the second prototype, in early 1968.
The model's technical innovations
The Gazelle was the first helicopter with a fenestron-type tail instead of a conventional anti-torque rotor. Its original main rotor was inspired by a rigid system created by Messerschmitt-Bölkow-Blohm for the Bo 105. Designers adopted an articulated rotor for the production models after encountering control difficulties during high-speed prototype trials.
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