The Baby Ace Model D is an American single-seater ultra-light monoplane of mixed wooden, metal frame and fabric construction first flown as a prototype in 1956. The Baby Ace Model D is a high-wing, wire-braced monoplane powered by a Continental A65, A85, C65 or C85 four-cylinder horizontally-opposed air-cooled engine providing a top speed of 177 kmh and a range of 560 km. Research Baby Ace Model D