Direct Fly Alto

The aircraft was designed to comply with the Fédération Aéronautique Internationale microlight class and US light-sport aircraft rules. It features a cantilever low-wing, a two-seats-in-side-by-side configuration enclosed cockpit, fixed tricycle landing gear or optionally conventional landing gear and a single engine in tractor configuration.^[1][2]

The aircraft is constructed from aluminum sheet, with a wing that has a span of 8.10 m (26.6 ft) and an area of 10.14 m² (109.1 sq ft). Standard engines available are the 80 hp (60 kW) Rotax 912UL, the 100 hp (75 kW) Rotax 912ULS and the 120 hp (89 kW) Jabiru 3300 four-stroke powerplants.^[1][2]

A Magnum 501 rocket powered parachute system is under development for the aircraft.^[4][5]

The Alto TG design was issued a Czech type certificate on 15 July 2008 and produced until 2022. The Alto NG replaced the original model in production in 2022.^[6][7][8]

In 2011 the design was accepted as a Federal Aviation Administration approved special light-sport aircraft.^[2][9]

The Alto NG replaced the original TG model in production in 2022.^[6][8]

The aircraft was introduced to the US light sport market at the 2010 Sun 'n Fun airshow.^[10]

In July 2022 there were five Altos registered with the US Federal Aviation Administration.^[11]

Alto TG

Tricycle landing gear version with a 472.5 kg (1,042 lb) gross weight.^[12]

Alto TW

Tailwheel (conventional gear) model.^[12]

Alto 100

Version for the American light sport aircraft market.

Alto NG

Improved "New Generation" version introduced in 2022. This model has a 600 kg (1,323 lb) gross weight, strengthened nosewheel landing gear leg and fuselage, longer engine mount and cowling for the Rotax 912 ULS engine, plus uses push-pull tubes in place of control cables.^[8]

Data from Bayerl and Direct Fly^[1][12]

General characteristics

• Crew: one
• Capacity: one passenger
• Length: 6.15 m (20 ft 2 in)
• Wingspan: 8.10 m (26 ft 7 in)
• Height: 2.25 m (7 ft 5 in)
• Wing area: 10.14 m² (109.1 sq ft)
• Empty weight: 287 kg (633 lb)
• Gross weight: 472.5 kg (1,042 lb)
• Fuel capacity: 118 litres (26 imp gal; 31 US gal)
• Powerplant: 1 × Rotax 912ULS four cylinder, liquid and air-cooled, four stroke aircraft engine, 75 kW (101 hp)

Performance

• Maximum speed: 245 km/h (152 mph, 132 kn)
• Cruise speed: 210 km/h (130 mph, 110 kn)
• Stall speed: 65 km/h (40 mph, 35 kn)
• Never exceed speed: 270 km/h (170 mph, 150 kn)
• g limits: +4/-2
• Rate of climb: 5.5 m/s (1,080 ft/min)
• Wing loading: 46.6 kg/m² (9.5 lb/sq ft)

Aircraft of comparable role, configuration, and era

• Piper Sport