What is Sikorsky R-4?
{|{{Infobox aircraft begin |name= Sikorsky R-4 |image=File:Royal Navy Sikorsky R-4 on MV Daghestan 1944.jpg |caption='''Sikorsky R-4''' of the [[Fleet Air Arm]]. }}{{Infobox aircraft type |type=[[Helicopter]] |national origin =[[USA]] |manufacturer=[[Igor Sikorsky|Sikorsky]]. |first flight=[[1942]] |introduction=[[1943]] |status=Out of order |primary user= [[United States Air Force|United States Army Air Force]] |produced= |number built= 131 examples. |unit cost= }} |} The '''Sikorsky R-4''' is the first [[military]] [[helicopter]] built in [[USA]]. It [[flight|flown]] during [[World War II]] and beginning of [[Korea War]]. Some were used by [[US Navy]], [[United States Coast Guard|US Coast Guard]] and [[Fleet Air Arm]]. {{military-stub}}-KOREAN WAR- The <u>R-4</u> was used in Korea as a rescue helicopter helping to carry wounded troops to military hospitals. Sikorsky said his greatest accomplishment with the helicopter, even better than making more space for air fields was the tens of thousands of live his invention saved through the multitude of wars it was deployed in. [[Category:Helicopters]] [[Category:United States Air Force aircraft]] [[Category:United States Coast Guard aircraft]] [[Category:United States Navy aircraft]] [[Category:Sikorsky aircraft & helicopter|R-4]]