Comper-Cierva C.25 / G.31/1


Single-seat fixed-spindle autogyro (G-ABTO) built by Comper Aircraft company, at Hooton Park near Liverpool. It was built from a Comper Swift fuselage with modified tailfins and short low-mounted wings. It was the first autogyro to be powered by the 80hp (60kW) Pobjoy Cataract seven-cylinder air-cooled radial engine and first flew in the beginning of 1933.

There is conflicting information from another source mentioning use of the earlier 86hp (63kW) Pobjoy Niagara R seven-cylinder air-cooled radial engine, not the Cataract. Could the Niagara R have been replaced by the Cataract around 1934, or is this a reporting mistake?