In 1957 Bob Younkin started Younkin Aviation Inc on Razorback Airport in Fayetteville Arkansas. Bob was a crop duster from the Memphis area. They would build engines and airplanes and sell them. In 1970 Kenneth Miller went to work for Bob, that is when it all took off on building the Best R-1340 & R-985 Pratt & Whitney Engines.
Younkin Aviation has