The Aérospatiale Alouette II (, Lark) is a light helicopter originally manufactured by Sud Aviation and later Aérospatiale, both of France. The Alouette II was the first production helicopter to use a gas turbine instead of a conventional heavier piston engine.
The Alouette II was mostly used for military purposes in observation, photography, air-sea rescue, liaison and training but it has also carried anti-tank missiles and homing torpedoes. As a civilian helicopter it was used for casualty evacuation (with two external stretcher panniers), crop-spraying and as a flying crane (with a 500 kg external sling load).
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... General characteristics Crew 1 Capacity 4 passengers Length 9.66 m (31 ft 9 in) Rotor diameter 10.20 m (33 ft 6 in) Height 2.75 m (9 ft 0 in) Disc area 81.7 m² (881.4 ft²) Empty weight 895 kg (1,973 lb) Max ... takeoff weight 1,600 kg (3,527 lb) Powerplant 1 × Turboméca Artouste IIC6 turboshaft, 395 kW (530 hp) derated to 269 kW (460 hp) Performance Maximum speed 185 km/h (100 knots, 115 mph) at sea level Cruise speed 170 km/h (92 knots, 106 mph) Range 565 km (305 nmi, 350 mi) Endurance 4.1 hours Service ceiling 2,300 m (7,545 ft) Rate of climb 4.2 m/s (820 ft/min) ...