Last UH-1 Huey, a 42 year military veteran retires. The last UH-1 Huey, tail number 74-22478, made its final flight as a U. S. Army operated aircraft Dec. 15, 2016. ... Bell Helicopter designed what would be first designated as the HU-1 Iroquois, and in true aviator fashion was simply called "Huey" by its operators.