|National origin||United States of America|
|Designer||Steve Wittman, Bill Brennand|
|First flight||16 July 1948|
Steve Wittman had started air racing in 1926 using various aircraft. In March 1931, he designed his own purpose-built aircraft in Oshkosh, Wisconsin, the Wittman Chief Oshkosh. After World War II, a new class of Midget air racing was formed with Wittmans efforts. Wittman re-engined "Chief Oshkosh" and renamed it "Bonzo". After several successful races in Cleveland in 1948, a cleaner sister ship "Little Bonzo" was built. The name is a reference to Wittman's much larger racer, the Wittman D-12 Bonzo.
The Wittman DFA is a mid-winged conventional geared aircraft built from a welded steel tube fuselage with aircraft fabric covering and wooden wing construction. The DFA differs slightly from Bonzo with a smaller tail surface, a longer tail and a larger canopy. In 1968, the engine was replaced with a Continental O-200 to compete under new race rules.
Steve Wittman and Bill Brennand alternated flying "Buster" and "Little Bonzo". The aircraft was never transported by trailer and was instead always flown to events, where Wittman would perform aerobatics between heats in his racing aircraft.
- 1948 National Air Races - Cleveland pilot Wittman placed second.
- 1949 Continental Trophy races - first place
- 1950 Rebat Trophy - first place
- 1951 Rebat Trophy - first place
- 1952 Continental Trophy races - first place
- 1964 Reno Formula One Championship - second place 
- 1973 Goodyear race - the last competitive race for Little Bonzo.
- 1994 Wittman flew the newly restored aircraft before it was donated to the EAA museum.
Aircraft on display
Specifications (Wittman DFA "Little Bonzo")
Data from Sport Aviation
- Capacity: 1
- Length: 19 ft (5.8 m)
- Wingspan: 15 ft 4 in (4.67 m)
- Wing area: 67 sq ft (6.2 m2)
- Empty weight: 508 lb (230 kg)
- Fuel capacity: 15 U.S. gallons (57 L; 12 imp gal)
- Powerplant: 1 × Continental C-85 , 100 hp (75 kW)
- Maximum speed: 204 kn; 378 km/h (235 mph)
- Range: 452 nmi; 837 km (520 mi)
- Aircraft of comparable role, configuration and era
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