The CEI Free Spirit Mk II, also called the Cabrinha Free Spirit Mark II and the Cabrinha Model 423, is a three-seat American homebuilt aircraft that was designed by Richard Cabrinha and produced by CEI of Auburn, California, introduced at AirVenture in 1995. The aircraft was intended to be supplied as a kit for amateur construction, but only prototypes seem to have been completed.Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, Fifth Edition, page 131. BAI Communications, 15 July 1998.
Design and development The design goals of the Free Spirit Mk II included long range, high speed and a high rate of climb. The aircraft features a cantilever low-wing, a two-seats-in-side-by-side configuration, plus a jump seat in an enclosed cockpit, retractable tricycle landing gear and a single engine in tractor configuration.
The aircraft is made from lightweight pre-molded composites. Its span wing employs a NASA NLF(1)-0215F natural laminar flow airfoil, mounts flaps and has a very small wing area of , giving a high wing loading of 25.0 lb/sq ft (122 kg/m2). The cabin width is . The acceptable power range is and the standard engine used is the Lycoming IO-360 powerplant.
The Free Spirit Mk II has a typical empty weight of and a gross weight of , giving a useful load of . With full fuel of the payload for crew, passengers and baggage is .
Operational history In 1998 the company reported that two aircraft were flying, but by December 2013 only one example remained registered in the United States with the Federal Aviation Administration.
Specifications (Free Spirit Mk II)
References
External links Photo of the prototype Free Spirit Mark II at AirVenture Oshkosh, 1995