CubCrafters has pulled back the curtain on the ULT Cub, a turbine-powered variant of its Carbon Cub airframe that represents one of the more significant powerplant developments in light general aviation in years. Built on the UL Cub (Ultralight) airframe—the same basic structure used with the Rotax 916iS—the ULT swaps piston power for a Turbotech turboprop engine sourced from France. The airframe required a roughly one-foot nose extension to compensate for the different weight distribution of the turbine versus the Rotax, and CubCrafters reportedly spent three years and a substantial capital investment developing and validating the integration before bringing it to market. Base price is $690,000, with the demonstrator aircraft shown equipped at approximately $740,000, positioning it well above traditional Cub-class aircraft but, as the pilot in the video notes, not wildly out of line with a well-equipped Cessna 172 or the last Waco YMF biplanes that left the production line.
The technical details matter more than the sticker price for pilots evaluating what this airplane actually delivers. The Turbotech engine uses a dual-FADEC architecture (primary and backup, with automatic or manual switchover), full redundancy across fuel pumps, electrical systems, and oil systems, and a single-lever power control that automates propeller pitch and fuel flow simultaneously—eliminating the traditional multi-lever workload of turboprop operation. Throttle response from idle to full power is cited at roughly two to two-and-a-half seconds, a figure that rivals or exceeds many piston constant-speed setups and gives the airplane genuine short-field and backcountry utility. The startup sequence is fully automated through a staged touchscreen interface, with built-in safety features like a pre-charge capacitor system that can auto-feather the prop in the event of an electrical failure, and a scavenge pump that returns unburned fuel to the tank on shutdown. For pilots accustomed to the fuel-management and mixture-leaning nuances of piston backcountry aircraft, this represents a meaningful shift toward turbine-like reliability and simplicity in an airframe class that has never had access to it at this weight and price point.
For working pilots and operators, the ULT Cub's significance lies less in whether any given buyer can justify $700K for a two-seat taildragger and more in what it signals about the trajectory of small-turbine technology trickling down into general aviation. Turboprop reliability, redundancy, and quick-spool response have historically been the province of King Airs, PC-12s, and similar business aircraft costing millions of dollars. Turbotech's engine, originally developed with an eye toward efficient, lightweight turbine propulsion for smaller airframes, is now flying in a certificated-adjacent light-sport-class aircraft, which is a notable proof of concept. Backcountry operators, bush pilots, and aerial photography or survey operations that value dispatch reliability, altitude performance, and reduced maintenance complexity compared to high-compression piston engines will watch this closely, even if the initial price tag limits the buyer pool to well-capitalized individuals and specialty operators.
More broadly, the ULT Cub fits into a wider industry pattern of alternative propulsion experimentation in light GA, alongside electric and hybrid-electric trainer programs and diesel conversions, all aimed at moving away from legacy 100LL piston technology. Turbine power brings its own advantages—altitude insensitivity, smoother operation, simplified fuel management, and strong power-to-weight characteristics—without the range and charging infrastructure limitations currently facing electric aircraft. If CubCrafters can demonstrate strong reliability and maintenance-cost data over the next few years, and if Turbotech or competitors can scale production to bring costs down, this could mark the beginning of a broader shift where small turbine engines become a viable option across a wider swath of the light aircraft and even certificated single-engine piston market, much as turbocharging and glass cockpits gradually migrated from high-end aircraft into mainstream GA over the past two decades.