Flight Design CT (CTSW/CTLS/CTLSi)

Flight Design is a German aircraft company that pioneered the modern composite LSA category. The CT design originated in the late 1990s as an ultralight in European markets, then evolved into the CTSW (Short Wing) variant that became one of the first airplanes certified as a Special Light Sport Aircraft under the new US LSA rules in 2004.

The CTLS (Long Stretch) followed in 2007 with refined aerodynamics, a longer wing, larger cabin, and improved cruise performance. The CTLSi added the Rotax 912 iS fuel-injected engine in the mid-2010s for improved fuel efficiency and electronic engine management. The basic airframe philosophy has remained consistent across variants: composite construction, side-by-side cabin, Rotax 912 power, modern panel options.

Flight Design went through financial restructuring in the late 2010s and continues production from facilities in Ukraine and Germany. As of mid-2026, the CT family continues to be produced and supported. The North American market sees ongoing new sales at modest volume and a deep used inventory built up over two decades of production. Flight schools and recreational owners both make heavy use of the airplane.

The CTLS cruises at 110 to 118 KTAS at 65% power, burning 4 to 4.5 gph. Maximum cruise is 120-plus KTAS at 75% power and 5 gph. The CTLSi with electronic fuel injection trims fuel burn by 0.3 to 0.5 gph at the same speeds. The CTSW with its shorter wing is 3 to 5 knots slower than the CTLS at similar power. All variants are competitive with the fastest LSAs in the market.

Useful load is modest, constrained by the 1,320-pound LSA limit. A typical CTLS has 480 to 520 pounds of useful load. Full fuel is 34 gallons (204 pounds), leaving 275 to 320 pounds for two people. That works for two normal-sized pilots and modest baggage. The CTSW is slightly tighter on cabin width and useful load.

Handling is light and responsive. The composite airframe is stiff and the controls are precise. Stall is gentle. The airplane lands easily for a low-time pilot but rewards skill with crisp slow-flight handling. Most flight schools find the CT transitions cleanly to and from Cessna 172 trainers, which has helped drive its adoption in the training market.

The Rotax 912 ULS (100 hp, carbureted) powers the CTSW and CTLS. The Rotax 912 iS Sport (100 hp, fuel injected) powers the CTLSi. Rotax's published TBO for the 912 ULS is 2,000 hours with a 15-year calendar limit. The 912 iS Sport shares the same TBO. Rotax is the dominant LSA engine maker globally and the service network is well-developed in most North American regions.

Field overhaul of a Rotax 912 ULS runs $12,000 to $16,000 in 2026 at a Rotax-authorized service center. The 912 iS Sport adds $1,000 to $2,000 because of the electronic engine management components. Rotax overhauls are typically cheaper than equivalent Lycoming or Continental overhauls. The 912 family has built a strong reliability reputation across multiple decades of LSA service.

Propeller is a composite ground-adjustable from Neuform or Sensenich. There's no constant-speed propeller on any CT variant. Ground-adjustable composite props have on-condition overhaul intervals rather than calendar limits. Overhaul on condition runs $600 to $1,800 in 2026.

The Flight Design CT is one of the most cost-effective LSAs to operate, particularly for owners who pursue the Light Sport Repairman Maintenance certificate.

Fuel runs $22 to $35 per hour at $5.50 to $7 per gallon and 4 to 5 gph. Engine reserve is $6 to $8 per hour. Prop reserve is under $1 per hour. Airframe maintenance reserve is $10 to $18 per hour. All-in at 100 hours a year runs $55 to $80 per hour with LSRM-M owner maintenance, or $75 to $105 per hour with full A&P maintenance. Annual fixed costs are $3,000 to $6,000.

The Light Sport Repairman Maintenance certificate is the key economic lever. The 120-hour training course authorizes the holder to perform most maintenance and annual condition inspections on LSAs they own. Roughly 50% of CT owners pursue the LSRM-M. For those who don't, annual maintenance adds $1,500 to $3,000 per year to operating cost.

Acquisition cost in mid-2026 runs $55,000 to $85,000 for a clean CTSW with modern panel, $80,000 to $130,000 for a CTLS or CTLSi with current avionics. Recent-build airplanes occasionally trade above $160,000. Factory new from Flight Design lists $185,000 to $235,000 depending on equipment. The CT trades cheaper than most other LSAs on the used market because of high production volume.