Percival Proctor was a British training and liaison plane in the low wing configuration, which was flown in 1939, and in the course of its production (which lasted in 1939-1945) about 1,150 machines of this type were created. The aircraft, in the Proctor Mark IV version, was 8.59 meters long with a wingspan of 12 meters. The drive was provided by a single de Havilland Gipsy Queen II engine with a maximum power of 210 HP. The maximum speed was 253 km / h, with a climb speed of 3.6 m / s / The machine had no on-board armament. Percival Proctor was constructed in response to the demand submitted by the British Air Ministry in the late 1930s for a new training plane for training pilots and navigators. The new machine was created as a development of the Vega Gull model, also from the Percival Aircraft Company. Ultimately, a successful plane was created, relatively easy to pilot, cheap to operate and generally of a sufficiently solid structure. In the course of serial production, several development versions were created, including: Proctor Mark I (basic version produced in serine), Proctor Mark II (aircraft dedicated to training navigators), Proctor Mark III (liaison version) or Proctor Mark IV (training version with 4 -person crew cabin). Aircraft of this type were used on a large scale during World War II to train RAF pilots, and after 1945 a large number of them entered the civilian market.