The Stewart S-51 Mustang is a high-performance kit-built replica of the legendary P-51 Mustang, offering modern engineering with the look and feel of the famous WWII fighter. Discover Stewart S-51 Mustang aircraft for sale worldwide on AvPay. Browse active Stewart S-51 Mustang listings and find available aircraft across the USA, North America, UK, Europe, Asia, Africa, Australia and South America. Connect directly with aircraft brokers, private sellers, flying clubs, flight schools and manufacturers. Explore the full inventory of aircraft for sale on AvPay here!
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Interesting facts about the Stewart S-51 Mustang
✈ The Stewart S-51 is a 70% scale, all-metal replica of the P-51D Mustang designed for amateur construction.
✈ Jim Stewart created the design and the prototype flew in March 1994 in Vero Beach, Florida.
✈ The aircraft seats two in tandem under a bubble canopy and uses retractable tailwheel landing gear.
✈ Many examples use water-cooled Chevrolet-based V-8 engines in the 300–700 hp range with a propeller speed reduction unit.
✈ A 91-inch, four-blade Hartzell constant-speed propeller is standard with a 2.13:1 reduction drive.
✈ Standard wing tanks hold 68 US gallons; optional long-range tanks increase total to 138 US gallons.
✈ Structural speed limits include VNE 320 knots, VNO 250 knots, and VFE 130 knots.
✈ By the late 1990s dozens of kits had sold, and US registrations continued to appear in subsequent years.
Stewart S-51 Mustang Specifications
Information provided here is as a guide only. Do not use it for flight planning or aircraft operations. Aircraft variations, engine choice, modifications, upgrades, and age can change the details below. Check with the seller, manufacturer, or aviation authority for precise aircraft specifications.
Length: 6.81 m (22 ft 4 in)
Wingspan: 8.15 m (26 ft 9 in)
Height: 2.84 m (9 ft 4 in)
Empty Weight: 1,089 kg (2,400 lb)
Max Take Off Weight (MTOW): 1,588 kg (3,500 lb)
Fuel Capacity: 257 L (68 US gal; 57 imp gal)
Cruise Speed: 389 km/h (241 mph, 210 kn)
Range: 1,127 km (700 mi, 609 nm)
Service Ceiling: 7,315 m (24,000 ft)
Rate of Climb: 14.1 m/s (2,780 ft/min)
Take-off Run to 15 m (49 ft): 418 m (1,370 ft)
Landing Run from 15 m (49 ft): 634 m (2,080 ft)
FAQs About the Stewart S-51 Mustang
How much does a Stewart S-51 Mustang cost?
Completed Stewart S-51 Mustangs vary widely by engine, avionics, and build quality. As of 2024–2025, market data shows completed examples often between $400,000 and $500,000, while uncompleted kits or projects can range from about $30,000 to $130,000. Always confirm current pricing with the seller and review build documentation.
What engines do builders typically install?
Builders commonly use Chevrolet-based water-cooled V-8 engines. Typical outputs range from 300 to 700 horsepower. A spur-gear PSRU with a 2.13:1 ratio drives a four-blade propeller.
What cruise speed should I expect?
Cruise speed depends on power and build. A common planning figure is about 210 knots indicated for structural cruise. Many examples report cruise in the 230–260 mph range depending on horsepower and altitude.
How much fuel does it carry?
Standard wing tanks hold 68 US gallons. Optional long-range wing tanks raise total capacity to 138 US gallons. Some aircraft also use 50 US gallon external drop tanks.
Is the Stewart S-51 suitable for cross-country flying?
Yes. With typical cruise speeds above 200 knots and a range around 700 miles on standard tanks, the S-51 works well for fast cross-country trips. Long-range tanks extend endurance for longer legs.
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