PlaneFox tracks 4 FK-Lightplanes FK9 aircraft for sale and re-reads every one of them from the broker and dealer sites it watches, so the figures below move when the market moves. Every number on this page is measured from those live listings, not taken from a published price guide.
A FK-Lightplanes FK9 flies about 540 nm, roughly 1,000 km, which is about 5 h 15 min in still air at typical cruise.
A FK-Lightplanes FK9 costs about EUR 724 a month to run, or about EUR 86 for every flight hour when it is flown 150 hours a year.
The FK-Lightplanes FK9 is a German two-seat, high-wing ultralight and light sport aircraft developed by B and F Technik, later FK-Lightplanes. The type first flew in 1989 and has remained in production through successive generations, most notably the FK9 Mk I through Mk V. It was designed as a practical touring and training aircraft in the European ultralight class, with side-by-side seating, tricycle landing gear and a strut-braced wing. For used-aircraft buyers, the FK9 matters because it combines conventional handling, low operating costs and broad parts familiarity through its widespread use of Rotax engines.
Performance depends on model generation, engine installation, propeller and national weight category. Most FK-Lightplanes FK9 aircraft are powered by the Rotax 912 series, commonly the 80 hp 912 UL or 100 hp 912 ULS, driving a fixed-pitch or ground-adjustable propeller. Typical cruise speeds are in the 90 to 110 knot range. Endurance and range vary with fuel capacity and power setting, but many examples are used for regional touring rather than only local flying. Certified operating weights differ by market, with European ultralight examples often registered around 450 kg to 472.5 kg maximum takeoff weight, while some light sport configurations may be higher. Service ceiling figures are commonly around the low teens in thousands of feet, subject to engine and propeller fit.
The FK-Lightplanes FK9 has a compact two-seat cabin with side-by-side seating and good outward visibility from the high-wing layout. Access is through side doors, and baggage capacity is modest, so loading discipline is important on touring flights. Panels vary widely by age. Earlier aircraft often have conventional round instruments, a basic VHF radio and transponder. Later or upgraded examples may feature lightweight glass avionics from suppliers such as Dynon, MGL or Garmin G3X-style equipment. Garmin Perspective and G1000 installations are not typical for the FK-Lightplanes FK9.
Used FK-Lightplanes FK9 values are driven by generation, engine hours, documentation, avionics and national registration category. Mk IV and Mk V aircraft generally command more interest than early Mk I or Mk II examples because of later structural, cabin and equipment refinements. Buyers should review Rotax maintenance records, gearbox and rubber replacement history, propeller condition, weight and balance data, and any repairs to composite or fabric-covered structures. Confirm that the aircraft’s paperwork matches the intended operating category, since ultralight and light sport rules affect payload, training use and resale. Well-kept FK9s sit in the used market as economical two-seat tourers and trainers rather than high-payload cross-country aircraft.