Ekolot KR-030 Topaz

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Ekolot KR-030 Topaz
Ekolot KR-030 Topaz (N717SP).jpg
Role Ultralight aircraft, light-sport aircraft
National origin Poland
Manufacturer Ekolot
Status In production (2014)
Unit cost
52,500 (assembled, 2011)
Developed from Ekolot JK-05L Junior

The Ekolot KR-030 Topaz is a Polish ultralight aircraft, designed and produced by Ekolot of Krosno. It was certified in Poland in February 2010. The aircraft is supplied as a kit for amateur construction or as a complete ready-to-fly aircraft.[1]

Design and development[edit]

The Topaz is a development of the Ekolot JK-05L Junior and was designed to comply with the Fédération Aéronautique Internationale microlight rules. It features a cantilever high wing in place of the Junior's strut-braced wing, a two-seats-in-side-by-side configuration enclosed cockpit, fixed tricycle landing gear and a single engine in tractor configuration.[1]

Like the Junior, the Topaz is made from composites. Its 10.76 m (35.3 ft) span wing employs an NN-1817 airfoil, has an area of 10.24 m2 (110.2 sq ft) and flaps. Dual 35 litres (7.7 imp gal; 9.2 US gal) fuel tanks are located behind the seats. A ballistic parachute is an available option. The standard engine available is the 80 hp (60 kW) Rotax 912UL four-stroke powerplant.[1][2]

The use of a one-piece wing without struts gives the Topaz a 20 km/h (12.4 mph) higher cruise speed than the Junior, while resulting in the same empty weight.[1]

The Topaz has been accepted by the US Federal Aviation Administration as a light-sport aircraft.[3]

Specifications (KR-030 Topaz)[edit]

Data from Bayerl[1][2]

General characteristics

  • Crew: one
  • Capacity: one passenger
  • Wingspan: 10.76 m (35 ft 4 in)
  • Wing area: 10.24 m2 (110.2 sq ft)
  • Airfoil: NN-1817
  • Empty weight: 290 kg (639 lb)
  • Gross weight: 472.5 kg (1,042 lb)
  • Fuel capacity: 70 litres (15 imp gal; 18 US gal)
  • Powerplant: 1 × Rotax 912UL four cylinder, liquid and air-cooled, four stroke aircraft engine, 60 kW (80 hp)
  • Propellers: 3-bladed composite


  • Maximum speed: 220 km/h (137 mph; 119 kn)
  • Cruising speed: 180 km/h (112 mph; 97 kn)
  • Stall speed: 65 km/h (40 mph; 35 kn)
  • Rate of climb: 6 m/s (1,200 ft/min)


  1. ^ a b c d e Bayerl, Robby; Martin Berkemeier; et al: World Directory of Leisure Aviation 2011-12, page 44. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X
  2. ^ a b Ekolot (11 September 2008). "Technical Description". Retrieved 7 June 2012. 
  3. ^ Federal Aviation Administration (10 September 2014). "SLSA Make/Model Directory". Retrieved 13 January 2015. 

External links[edit]