Boeing/Stearman 450 for Sale — The Powered-Up Stearman
The Boeing/Stearman 450 represents the most powerful production evolution of the legendary Stearman biplane family — an aircraft that takes the proven Stearman Model 75 airframe and fits it with a more powerful engine to deliver improved performance for agricultural operations, aerobatic training, and airshow work where the standard Continental or Lycoming-powered 75 series reached its performance limits. The 450-horsepower Pratt & Whitney Wasp Junior radial engine — which gives the model its designation — transforms the Stearman's climb rate, load-carrying ability, and aerobatic energy management compared to the lighter engines in the 75 series, making it the preferred choice for agricultural operators who need to carry meaningful chemical loads from short strips in hot weather.
Agricultural Legacy
The Stearman 450's primary postwar role was agricultural aviation, where its powerful radial engine, open hopper bay, and ability to operate from rough strips made it one of the most effective crop dusters of its era. Thousands of Stearmans were converted to agricultural use after World War II, and many of these aircraft accumulated extraordinary operational hours in demanding agricultural environments. Examples that have been restored from agricultural service and returned to airworthy condition represent a fascinating intersection of aviation history, working aircraft heritage, and collector appeal.
Find Your Stearman 450 on Airplane Trade
Browse Boeing/Stearman 450 aircraft for sale on Airplane Trade from verified sellers worldwide. Agricultural conversions, restored examples, and airshow aircraft available with complete Pratt & Whitney Wasp documentation. Connect with sellers who understand the Stearman 450's unique power and operational heritage.