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Because the Challenger 600 was underpowered, Canadair soon developed an upgraded version of the aircraft dubbed the 601-1A, equipped with winglets and 8,650-pound-thrust GE CF34-1A engines.


A production model Challenger 601-1A flew for the first time in September 1982, and won FAA certification in March 1983.


Other organizations that flew the 601-1A included Canada’s department of transport (which used the airplane for flight inspection), Canada’s department of national defense, the People’s Republic of China, and Germany’s Luftwaffe—which operated a combination cargo/passenger version and an air ambulance model.


The Challenger 601-3A, which features more powerful 9,220- pounds-thrust (with automatic power reserve) CF34-3A engines, was launched in September 1986.

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