

It could carry a payload of 360 kg (800 lb) a distance of at least 365 km (227 miles) and cruise at 184 kph (114 mph).

The Army specifications described an aircraft that weighed 3,600 kg (8,000 lb), fully loaded. Army launched a design competition for a new medical evacuation (medevac) helicopter. The concept for this aircraft sprang from the cold, muddy battlefields of the Korean War, where the original MASH (Mobile Army Surgical Hospital) helicopter, the Bell 47, recovered thousands of wounded soldiers and delivered them straight to critical care units.

They usually heard the unmistakable whop-whop-whop of the main rotor blade long before they saw a Huey. People knew it not just on sight but by sound, too. For a time, the Huey was one of the most recognizable aircraft in history. Army as a derivative of the original designation HU-1A - Helicopter, Utility, Model 1A. military operated them and they ranged to every corner of South Vietnam and into Cambodia and Laos. What the jeep was to Americans during World War II, so was the Huey to those who fought in Vietnam.
