Percival Prince

The Percival Prince is a British light transport of the early postwar period.

It was a twin engine, high wing, cantilever monoplane of all-metal stressed-skin construction, the undercarriage was of retractable, tricycle configuration.


P.50 Prince 1  

Prototype based on Merganser with modified fin and undercarriage and two 520 hp Alvis Leonides 501/4 engine.

P.50 Prince 2  

Prince 1 with sloping windscreen, stronger main spar.

P.50 Prince 3

Prince 2 with Alvis Leonides 502/4 engine and lengthened nose on some aircraft.

P.50 Prince 4  

Conversions to Alvis Leonides 503 engines.

P.50 Prince 5

Original designation of the Percival President.

P.50 Prince 6

Conversions to Alvis Leonides 504 engines.

P.54 Survey Prince  

Prince 2 with lengthened transparent nose and camera hatches.

P.57 Sea Prince C1

Prince 2 for Royal Navy use.

P.57 Sea Prince T1

Prince 3 with long nose housing radar, twin wheeled main undercarriage and lengthened engine nacelles for navigation and anti-submarine training.

P.57 Sea Prince C2

Transport version of Sea Prince T1.


Sea Prince T.1


Two pilots


Three pupils


46 ft 4 in (14.12 m)


56 ft 0 in (17.07 m)


16 ft 1 in (4.90 m)

Wing area

365 sq ft (33.9 m2)

Empty weight

8,850 lb (4,014 kg)

Gross weight

11,850 lb (5,375 kg)


2 × Alvis Leonides 125 9-cylinder air-cooled radial engines, 550 hp (410 kW) each


Maximum speed

194 kn (223 mph, 359 km/h) at 2,000 ft (610 m)

Cruise speed

159 kn (183 mph, 295 km/h) at 11,000 ft (3,400 m)


400 nmi (460 mi, 740 km)

Service ceiling

22,000 ft (6,700 m)

Rate of climb

1,400 ft/min (7.1 m/s).

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