ATEC 321 Faeta

The ATEC 321 Faeta is a Czech ultralight and light-sport aircraft, designed and produced by ATEC v.o.s. of Libice nad Cidlinou. It was developed from the earlier ATEC 122 Zephyr 2000. The aircraft is supplied as a complete ready-to-fly-aircraft.^[2][3][4]

321 Faeta
Role	Ultralight aircraft and Light-sport aircraft
National origin	Czech Republic
Manufacturer	ATEC v.o.s.
Introduction	2003[1]
Status	In production
Developed from	ATEC 122 Zephyr 2000

Design and development

The Faeta was designed to comply with the Fédération Aéronautique Internationale microlight rules and US light-sport aircraft rules. It features a cantilever low-wing, a two-seats-in-side-by-side configuration enclosed cockpit under a bubble canopy, fixed tricycle landing gear, a T-tail and a single engine in tractor configuration. It is an approved SLSA in the USA.^[2][3][4][5]

The aircraft fuselage is made with a carbon fibre shell and composite sandwich bulkheads. The 9.6 m (31.5 ft) span wing is made from carbon fibre sandwiches built upon a laminated wooden spar. The wing varies from the Zephyr in that it has a different tapered planform and uses a new airfoil. The design attempts to provide a lower empty weight and stall speed than the 122 Zephyr. The standard engine available is the 100 hp (75 kW) Rotax 912ULS four-stroke powerplant.^[2][3][4]

The Nordic Omsider amphibian prototype uses the wings and part of the tail from the Faeta.^[4]

Specifications (321 Faeta)

Data from Bayerl and Tacke^[2][4]

General characteristics

• Crew: one
• Capacity: one passenger
• Wingspan: 9.6 m (31 ft 6 in)
• Wing area: 10.1 m² (109 sq ft)
• Empty weight: 278 kg (613 lb)
• Gross weight: 472.5 kg (1,042 lb)
• Fuel capacity: 70 litres (15 imp gal; 18 US gal)
• Powerplant: 1 × Rotax 912ULS four cylinder, liquid and air-cooled, four stroke, 75 kW (101 hp)
• Propellers: 3-bladed composite

Performance

• Maximum speed: 270 km/h (170 mph, 150 kn)
• Cruise speed: 227 km/h (141 mph, 123 kn)
• Stall speed: 52 km/h (32 mph, 28 kn)
• Rate of climb: 7 m/s (1,400 ft/min)
• Wing loading: 46.78 kg/m² (9.58 lb/sq ft)