Welcome to Younkin Aviation Inc.
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 supplied Air Tractor, Thrush, Ag Cat, with new rebuild engines for new crop duster airplanes for many years. We Raced at the Reno Air Races with Jack Frost in 1998-2000 when he set all the speed records that could be broken at the time. We also build 1340 & 985 Pratt & Whitney Snap Cap early production Wasp and Wasp JR engines dating Patents of GE from 1907-1933 that were installed on a Boeing 100 from World War I and other airplanes as well.
We pride our selfs on building the best 1340 & 985 Pratt & Whitney engines. We offer a full in house machine shop for all the work done rebuilding these R-1340 & R-985 Engines