Flight testing has officially begun in Poland for the AT-6 Twin, a new four-seat aircraft designed by Tomasz Antoniewski with a bold vision: to make multi-engine training more accessible and affordable. This aircraft represents a unique approach to light aviation, blending innovative design with cutting-edge regulations to create a trainer that could transform pilot education worldwide.

A Revolutionary Design

The AT-6 Twin features a three-surface configuration, including a forward canard, main wings and a conventional tailplane. This layout is engineered for improved stability, efficiency and handling, particularly in the critical phases of multi-engine flight training. According to Antoniewski, the design allows pilots to experience advanced flight dynamics while maintaining a forgiving training platform—a balance often missing in traditional twin-engine trainers.

Powering the aircraft are Fly Rotax 916 engines, known for reliability, efficiency and ease of maintenance. The combination of light airframe, modern powerplants and aerodynamic refinement results in a trainer that promises lower operational costs, making it particularly attractive for flight schools and aspiring multi-engine pilots.

Leveraging MOSAIC Regulations

The AT-6 Twin is designed around the new MOSAIC (Modernized Special Airworthiness Certification) regulations, which expand the scope for light-sport and experimental aircraft in the United States. By adhering to these guidelines, Antoniewski’s aircraft can provide a “Zero to ATP” training pathway, potentially allowing pilots to transition from initial flight training all the way to Airline Transport Pilot certification within a single family of aircraft.

This regulatory advantage positions the AT-6 Twin as a pioneer in a market hungry for cost-effective high-quality multi-engine training solutions.

Looking Ahead

While the aircraft is currently undergoing flight tests in Poland, plans are already underway for a U.S. debut in 2027. Aviation enthusiasts and flight schools alike are watching closely, as the AT-6 Twin promises to deliver a combination of affordability, safety and advanced training capabilities rarely seen in the Light Sport Aircraft (LSA) category.

In an era where pilot shortages and rising training costs are major challenges, the AT-6 Twin offers a fresh approach—a trainer that could redefine how pilots gain multi-engine experience while remaining accessible to a broader audience.