Lucas L6B

The Lucas L-6B (sometimes L6B) is a French homebuilt aircraft that was designed by Émile Lucas. When it was available the aircraft was supplied in the form of plans for amateur construction.

Design and development
The L-6B is a sport touring aircraft derived from the Lucas L6 and Lucas L-6A. It features a cantilever low-wing, a two-seats-in-tandem enclosed cockpit under a bubble canopy, retractable tricycle landing gear and a single engine in tractor configuration. It is noted for its high service ceiling of 6096 m and 1770 km range.

The aircraft is made from sheet aluminum. Its 8.84 m span wing mounts flaps and has a wing area of 13.01 m2. The wing is a complex shape with a swept wing root, transitioning to a forward swept leading edge, with a straight tapered trailing edge, resulting in a highly tapered wing planform. The outer wing section can be folded for ground transport or storage. There are optional additional span wing tip extensions to increase glide performance. The cabin width is 71 cm and fuel tanks are located in the wing leading edge. The acceptable power range is 108 to 180 hp and the standard engines used are the 108 hp Lycoming O-235 and the 180 hp Lycoming O-360 powerplant.

The L-6B has a typical empty weight of 481 kg and a gross weight of 721 kg, giving a useful load of 240 lb. With full fuel of 150 L the payload for the pilot, passengers and baggage is 131 lb.

The manufacturer estimated the construction time from the supplied kit as 4000 hours.

Operational history
By 1998 the company reported that five kits had been sold and two aircraft were completed and flying.