Lancair IV

The Lancair IV and IV-P are a family of four-seat low-wing retractable-gear composite monoplanes powered by a 550 cubic inch Continental turbo-normalised piston engine.

Production of the aircraft kit was ended in 2012.

Development

The Lancair IV and IV-P were designed by Lancair around the Continental TSIO-550 - a twin turbocharged engine that is capable of developing 350 hp (261 kW) at sea level and capable of operating altitudes as high as 29,000 feet.

By the fall of 2011 110 Lancair IVs and 250 IV-Ps had been completed and were flying.

 

Variants

Lancair IV
Unpressurized four seat kit-plane, powered by a 350 hp (261 kW) Continental TSIO-550 engine
Lancair IV-P
Pressurized four seat kit-plane, powered by a 350 hp (261 kW) Continental TSIO-550 engine
Lancair Propjet
Pressurized four seat kit-plane, powered by either a Walter or a PT6 Pratt & Whitney turboprop, that can achieve cruise speeds in excess of 300 knots (556 km/h) at altitudes up to 30,000 feet (9,140 m).

Accidents

As of March 2010, the NTSB Aviation Accident Database records 19 crashes involving 17 fatalities across all IV variants.
On February 3, 2012, Steve Appleton, CEO of Micron Technology, Inc., was killed while attempting an emergency landing in a Lancair IV-PT turboprop at the Boise Airport in Boise, Idaho, moments after takeoff. He had aborted a take off a few minutes earlier.

Specifications (Lancair IV-P)

General characteristics

• Crew: one
• Capacity: three passengers
• Length: 25 ft 0 in (7.62 m)
• Wingspan: 35 ft 6 in (10.82 m)
• Wing area: 98 sq ft (9.1 m2)
• Aspect ratio: 9:1
• Empty weight: 2,200 lb (998 kg)
• Gross weight: 3,550 lb (1,610 kg)
• Fuel capacity: 90 U.S. gallons (340 L; 75 imp gal), 110 U.S. gallons (420 L; 92 imp gal) with extended tanks
• Powerplant: 1 × Continental TSIO-550 six cylinder, horizontally opposed piston engine, 350 hp (260 kW)
• Propellers: 3-bladed constant speed

Performance

• Cruise speed: 330 mph (287 kn; 531 km/h) at 24,000 feet
• Stall speed: 75 mph (65 kn; 121 km/h) in landing configuration
• Range: 1,550 mi (1,347 nmi; 2,494 km) with reserves at 8000 feet
• Endurance: 6.0 hours
• G limits: +4.4/-2.2 (utility category), +3.8/-2.0 (normal category)
• Rate of climb: 1,500 ft/min (7.6 m/s) at 3550 lbs gross weight
• Wing loading: 36.2 lb/sq ft (177 kg/m2) without winglets