This specialised aerobatic aircraft, designed by Pietro Terzi, made its first flight on 16 January 1991. It is available either in kit form or fully built and certificated to FAR 21 in the Experimental category. Terzi had delivered two kits by March 1991, one of them in the E version to which the data below refer.

TYPE: Single-seat competition aerobatic aircraft.

AIRFRAME: Aluminium alloy wings (detachable) and tail unit, and welded steel tube fuselage with removable composite shells of PVC core with Kevlar and carbon cloth facing. Three-axis control, with trim tab on starboard elevator. Non-retractable tailwheel landing gear.

POWER PLANT: The prototype flew with 224 kW (300 hp) Textron Lycoming O-540, but the definitive E version has 298 kW (400 hp) Textron Lycoming IO-720A, with Christen inverted operating kit, driving a Muhlbauer four-blade constant-speed propeller. An aerobatic fuel tank is mounted in the fuselage and two cruising tanks in the wing leading-edges; total capacity 195 litres (51.5 US gallons; 42.9 Imp gallons).

DIMENSIONS, EXTERNAL:

• Wing span: 7.77 m (25 ft 6 in)
• Length overall: 6.70 m (21 ft 11¾ in)
• Height overall: 2.57 m (8 ft 5¼ in)

AREA:

• Wings, net: 10.60 m² (114.1 sq ft)

WEIGHT (Aerobatic):

• Max T-O weight: 880 kg (1,940 lb)

PERFORMANCE:

• Max level speed: 205 knots (380 km/h; 236 mph)
• Stalling speed: 53 knots (98 km/h; 61 mph)
• Max rate of climb at S/L: 1,380 m (4,527 ft)/min
• g limits: ±12