Development and Design Philosophy
Don Farrington conceived the Twinstar in the early 1990s with an ambitious goal: creating an autogyro that could eventually achieve FAA type certification while remaining accessible to amateur builders. Unlike the ultralight autogyros dominating the market, Farrington's design emphasized reliability and maintainability by incorporating certified aircraft components, particularly the proven Lycoming O-320 engine that had powered thousands of general aviation aircraft since 1961.
The Twinstar's construction reflected this philosophy of bridging experimental and certified aviation. Its fuselage combined welded steel tubing with bolted aluminum sections and fiberglass fairings, creating a structure substantially more robust than typical kit aircraft. The tandem seating arrangement placed pilot and passenger in an open cockpit protected by a windshield, while dual vertical stabilizers provided directional stability unique among autogyros of the era.
Production and Market Reception
Farrington Aircraft Corporation launched Twinstar sales in the mid-1990s, marketing the kit for an estimated 200 hours of construction time. The company promoted the aircraft's 120-180 horsepower power range, though the standard installation used the 150-horsepower O-320 variant. With a $40,000 kit price targeting serious amateur builders, the Twinstar represented a significant investment compared to simpler autogyro designs.
By 1998, approximately 25 kits had found buyers, but only five had reached completion and first flight. This completion rate reflected both the complexity of the design and the specialized nature of autogyro construction. Over the production run, about 12 Twinstars eventually took to the skies, with builders drawn to the aircraft's unusual combination of open-cockpit flying and certified engine reliability.
Performance and Capabilities
The completed Twinstar demonstrated impressive performance for its class. With a gross weight of 1,200 pounds and empty weight of 700 pounds, it could carry 500 pounds of useful load, including 20 gallons of fuel and up to 380 pounds of occupants and baggage. Takeoff rolls of just 200 feet and landing rolls of 50 feet made it suitable for small airstrips, while the pusher propeller configuration provided excellent forward visibility.
The 30-foot rotor disc generated 706 square feet of rotor area, giving the Twinstar substantial lifting capacity. The relatively narrow 24-inch cabin width required slim occupants but contributed to the aircraft's overall efficiency. Pilots appreciated the responsive controls and the reassuring sound of the Lycoming engine, whose dual ignition system and proven reliability contrasted sharply with the two-stroke engines common in ultralight rotorcraft.
The Manufacturer's Legacy
Farrington Aircraft Corporation represented Don Farrington's vision of bringing autogyro technology into mainstream aviation. Operating from Paducah, Kentucky, throughout the 1990s, the company also produced the Farrington 18A autogyro kit, achieving 20 completions in a more successful program. Farrington's designs consistently emphasized safety and reliability over low cost, targeting pilots who valued certified components and robust construction.
The company's operations ended tragically on April 13, 2000, when Don Farrington was involved in an accident while flying a Farrington 18A. He died ten days later on April 23, 2000, bringing both his innovative work and the company to a close. Without Farrington's leadership and design expertise, production of both the Twinstar and 18A ceased permanently.
Surviving Aircraft and Current Status
By March 2015, six Twinstars remained on the FAA registry, representing half of all completed aircraft. These survivors continue flying under Experimental-Amateur Built certificates, with owners maintaining their aircraft using available drawings and the widespread parts availability of the Lycoming O-320 engine. The autogyro community, particularly members of the Popular Rotorcraft Association, has kept several examples active.
One notable survivor, registration N45CL built in 1996, accumulated 551 total airframe hours before a non-fatal accident in July 2025, demonstrating the longevity possible with proper maintenance. Owner Tim O'Connor became something of a Twinstar ambassador in the 2020s, sharing flight experiences through online videos that introduced new audiences to this unique aircraft.
Technical Innovation and Influence
The Twinstar's significance extends beyond its limited production numbers. It represented an early attempt to integrate certified aircraft reliability into the experimental rotorcraft world, influencing subsequent designs that prioritized safety and maintainability. The dual vertical stabilizer configuration and robust construction techniques appeared in later autogyro designs, while the certified engine integration concept became more widely adopted.
Though Don Farrington's goal of achieving type certification remained unrealized, the Twinstar proved that amateur-built autogyros could incorporate professional-grade components and construction standards. This legacy continues to influence modern kit aircraft designers who balance accessibility with reliability, even as the original Twinstar remains a rare sight at fly-ins and airshows.