Designed to meet Air Ministry Specification T.23/43, the Prentice was the first all-metal aircraft to be produced by the
Percival Aircraft Company. The first (of 5) prototypes, Prentice TV163 was first flown by Leonard Carruthers from Percival's factory at
Luton Airport, Bedfordshire, on 31 March 1946. Early trials revealed lateral instability with inadequate rudder control and poor spin recovery, which required extensive tests with revised tail configurations. These resulted in modifications to the fin, rudder, elevators and upturned wingtips. An unusual design feature was the provision for three seats. While the instructor and pupil were equipped with dual controls in a side-by-side arrangement in the front, a second pupil sat in the rear seat without controls to receive "air experience". Both pupils could communicate with the instructor. Night flying training was to be carried out in daylight by means of amber screens incorporated into the canopy and the use of special goggles. The amber screens were folded back when not in use. The RAF ordered a total of 455 Prentices (95 were subsequently cancelled) and there were also a limited number of export sales. When the Percival factory was concentrating on production of the
Percival Proctor and development of the
Merganser as the
Prince light transport aircraft, production of 125 aircraft was sub-contracted to the
Blackburn Aircraft works at
Brough. ==Operational service==