The General Electric I-A was the first working jet engine manufactured in the United States, achieving its first run on April 18, 1942. The engine was the result of receiving an imported Power Jets W.1X that was flown to the US from Britain in 1941, and the I-A itself was based on the design of the improved Power Jets W.2B, the plans of which were also received. Like these designs, the I-A engine was also of centrifugal design and was built by the General Electric (GE) company.