After receiving the aircraft, Fitzmaurice and his co-pilot, Eric "Jock" Bonar conducted a rapid series of preflight tests in New York before carrying out the first flight on 1 September 1934. The initial flight showed problems in aileron controls that necessitated a modification. Following a successful second test flight, the aircraft painted as "race 29" was crated and shipped by sea on the liner
SS Bremen with a final destination at Bremerhaven, after the aircraft was unable to be offloaded at its first stop in Southampton, when the small ship that was to transport the Bellanca broke its towline. Christened the
Irish Swoop, Fitzmaurice and Bonar took off in the racer on 9 October, arriving in
Great Britain barely in time for the start of the
MacRobertson Race. The MacRobertson race rules committee considered the Fitzmaurice and Bonar entry not "race-ready". A more serious problem involved the Bellanca exceeding its design specifications wherein it had been certified for a 400-gallon fuel capacity and now was carrying much more fuel and weight without being recertified. Assigned a penalty that limited its fuel to 120 gallons, Fitzmaurice withdrew the
Irish Swoop hours before the race, unwilling to sacrifice his fuel load. After being recertified for its new configuration, Fitzmaurice and Bonar undertook a long-distance record flight on 29 October 1934 intending to set a new London-Baghdad mark (4,100 km / 2546 mi). Over Belgium, however, problems with a fairing and the cowling caused an end to the attempt. The Bellanca was shipped back to the US to finish its tests, but was badly damaged in a landing accident on 15 April 1935 when a gust of wind flipped the aircraft on its back during a proving flight undertaken by Bonar and Bellanca mechanic Eddie Griscome. In 1936, the aircraft was rebuilt with a 900 hp P&W Twin Wasp and redesignated the 28-90. Purchased by
British long-distance air racer
Jim Mollison for $28,000, he renamed the aircraft
Dorothy and used the Bellanca for a new transatlantic speed record, but in 1937 sold the aircraft to the Republican government in Spain. The
Bellanca 28-90 Flash was developed into a bomber in the 1930s for export to Spain to take part in the
Spanish Civil War. Although none reached Spain, the order was diverted to China where the aircraft briefly saw service. Later, an additional batch destined for Spain ended up in Mexico. A total of 43 aircraft were produced. ==Operators==