One example completed the first transcontinental non-stop roundtrip flight, made in 1929 by the CA-6 Spokane Sun-God,[2] and the first Pope to have flown did so in a Buhl Airsedan.[6] After Buhl had ceased operations in 1932 due to declining sales as the Great Depression deepened, the drawings and jigs were purchased by the Ontario Provincial Air Service (OPAS) in Canada who then built four CA-6M's for use as fire spotting aircraft at their facility in Sault Ste.[7] Due to the excessive weight of the Canadian-Vickers built floats, the first Ontario Provincial Air Service-built CA-6M refused to leave the water until given a more powerful 440 hp (330 kW) Pratt & Whitney Wasp engine.A CA-5 Airsedan NC2915, dubbed Miss Doran, and flown by Auggie Pedlar with V. P. Knope navigating, was one of the entrants in the disastrous August 1927 Dole Air Race and like many competitors, was lost at sea.[9] Another Airsedan, a CA-6 Special NC9628 named Spokane Sun God made the first nonstop round-trip crossing the United States by air.[10][11] Nick Mamer and Art Walker flew from Spokane, Washington, to New York City and back beginning on August 15, 1929, taking 120 hours (five days) for the trip, using inflight refueling.[19] Beginning in September 1936, he initiated what may be the shortest commercial airline route, between Ciudad Altamirano to Coyuca de Catalán, a distance of about 1 km (0.62 mi), which he covered in a mere two minutes of flight time, and for which he charged 8 pesos per person.
Unmarked CA-5 Airsedan prototype
Canadian-built Buhl CA-6M Airsedan with enlarged lower wings.
The Angelino Junior
after winning the 1929 Oakland-Cleveland race