A build-it-yourself aircraft which can be constructed for a maximum of ?285 ($800) including engine has been developed by the U.S. magazine Mechanix Illustrated. The May issue of this magazine will carry complete plans for building the aircraft. Named the MI Baby Ace it has a top speed of 110 m.p.h. , a cruising speed of 95 m.p.h., and a landing speed of 30 m.p.h. Power is from a 65-h.p. engine; span is 25 ft. 9 in. The prototype Baby Ace, already approved by the C.A.A. (the U.S. counterpart of our A.R.B.) was built by Captain Paul H. Poberezny, a Wisconsin National Guard jet pilot. He was helped by several local enthusiastis of home-built aircraft. He is president of the Experimental Aircraft Association, a national non-profit-making organisation devoted to furthering the interests of home-construction enthusiasts. Captain Poberezny built his Baby Ace for less than $500 (?180). In the early 1930s the Corben Baby Ace was a popular parasol-type home-construction plane. The MI Baby Ace is based on that design. The address of Mechanix Illustrated is 67 West 44th Street. New York 36. New York. U.S.A.