Look carefully at the second part of this video below, someones finally done it. 4 passengers and a pilot in a CH-640.
CH-640 from a kit or scratch built
This fan site features the 2 seat Alarus/CH-2000 FAA Certified Aircraft and its larger variant the 4 seat Ch-640 Experimental Kitplane.
Look carefully at the second part of this video below, someones finally done it. 4 passengers and a pilot in a CH-640.