The Cozy Mark IV is a 4-seat, single engine, homebuilt light aircraft designed by Nat Puffer, with parts and plans supplied by Aircraft Spruce & Specialty Co. The aircraft is built from plans using basic raw materials.

The Cozy Design is an Aircraft Spruce Copyright Aircraft Spruce purchased the Cozy designs (Cozy III and Cozy Mark IV) from Co-Z Development, and as of January 1, 2004 has the exclusive right to market these designs.

Aircraft Spruce & Specialty Co. has acquired all existing inventory, tooling, and drawings for the prefabricated metal parts used in construction of the popular Cozy Mark IV aircraft. Ken Brock Manufacturing Co. of Stanton, CA produced the metal parts for the construction of the Cozy and Long-EZ aircraft since the mid-1970's until ceasing ...

Jun 19, 2021 · Contact Aircraft Spruce. directly for sales information on the COZY MKIV aircraft. The sad story of my first homebuilt plane: (1981 - 1985). Building and Test FLYING!! (My second homebuilt plane: 1995 - 2002).

The Cozy Mark IV is our newest design, and about 225 have been completed and are flying, with many more almost complete. It is also important to remember that the Cozy was based on Burt Rutan's very successful Varieze and LongEz designs which each had around 3000 flying.

Cozy Mk 4. The Cozy Mark IV is in a class by itself. It is the most popular plans-built, high-performance, 4-place. Its safety record is unexcelled. Building cost at $15,000 for the airframe is about one-half that of prefab 4-place designs, and building time is about the same.

Jan 22, 2010 · Designed by Burt Rutan, the Cozy Mark IV is one of the most popular four place composites in the air. The Cozy features forward canards, which provide two lifting surfaces. With canards, wings can have less area, less span and a lower weight loading. Drag is reduced and the performance is enhanced.

What is a Cozy MK IV? If you haven't Googled it yet, here's my short description for non- aviation enthusiasts (family and friends who are wondering what the hell I'm doing...). The picture to the right is a group of aircraft nick named 'Canards' for the small canard wing in the front.