The Zenair Mono-Z CH 100 is a single-seat, single-engined Canadian light aircraft of the 1970s, that was designed by Chris Heintz.

After emigrating to Canada and setting up Zenair to sell plans and kits for amateur construction of his Zenith two-seat-light aircraft, the German aircraft designer Chris Heintz started design of a smaller, single-seat development of the Zenith, the Mono-Zenith.

[1] The Mono-Z CH 100 is similar to the Zenith that preceded it, a low-winged cantilever monoplane of all metal construction.

The aircraft features a large cockpit for taller pilots, with a pilot and baggage combined weight allowance of 240 lb (109 kg) and removable wings for storage and towing the aircraft behind a car.

[2][3] The first CH 100 made its maiden flight on 8 May 1975, powered by a 55 hp (41 kW) Volkswagen air-cooled engine of 1600 cc, with 110 sets of plans and kits sold by 1982.