The Ekolot KR-030 Topaz is a contemporary Polish ultralight and light-sport aircraft (LSA) designed for recreational flying, touring, and basic flight training. Developed by Ekolot in Krosno, Poland, the aircraft is characterized by its all-composite monocoque construction, utilizing shell structures made from carbon or glass fiber. A defining design feature is its strutless high-wing configuration, which reduces drag and enhances aerodynamic efficiency compared to many other aircraft in the ultralight segment.
The first version of the KR-030 Topaz made its maiden flight in 2006 at Krosno, Poland, and subsequently received certification in Poland in February 2010. The aircraft is designed as a two-seat, side-by-side configuration. To maximize cockpit space and pilot comfort, Ekolot incorporated a centrally located joystick. The aircraft's flight characteristics are noted for being benign, with a low stall speed of 65 km/h and a strong gliding ratio (finesse 12), which reduces the tendency to enter unintended spins.
Powerplant options are centered on the Rotax 912 series of four-cylinder, four-stroke piston engines. The standard Rotax 912 UL provides 80 hp (60 kW) at 5,800 rpm, while the Rotax 912 ULS and the fuel-injected 912 iS variants increase output to 100 hp (73.5 kW) at the same RPM. These engines typically drive a three-bladed composite propeller. Depending on the engine installed, the maximum level speed ranges from 210 km/h for the 912 UL to 237 km/h for the ULS and iS models, with a never-exceed speed (VNE) of 240 km/h. The aircraft is capable of short-field operations, with takeoff runs as short as 70 to 80 meters and landing runs of approximately 100 meters.
Civil operation of the Topaz is international. In the United States, the aircraft has been accepted by the Federal Aviation Administration (FAA) as a Special Light-Sport Aircraft (S-LSA). Examples of the type have been documented in France, the Netherlands, and Australia. While total production numbers are not publicly recorded, the aircraft remains in production as of 2025, continuing Ekolot's presence in the light-sport market alongside other models such as the JK-05 Junior and the Elf motor-glider.