|Wind tunnel model of the Loire 501|
|Role||Liaison flying boat|
|Primary user||French Navy|
Design and development
In 1930, Loire Aviation, a subsidiary of the French shipyard Ateliers et Chantiers de la Loire of Saint-Nazaire, started design of a single-engined flying boat for use as a trainer and a transport in France's overseas possessions. The resultant aircraft, the Loire 50, was an amphibian high-winged monoplane, with a pusher Salmson 9AB radial engine mounted above the wing. Construction was all-metal, with fabric-covered wings.
The Loire 50 first flew on 7 September 1931. Although it was damaged in an accident in October it was repaired and entered service in 1932 as a trainer. It was returned to Loire in February 1933, where it was modified with a more powerful Hispano-Suiza 9Qd engine, becoming the Loire 50bis, flying in this form on 18 October 1933. An order for six aircraft similar to the Loire 50bis, designated Loire 501, delivery starting by the end of 1933. The Loire 501 remained in service at the start of the Second World War, with the last example still in use at Karouba in Tunisia on 15 August 1940.
Data from War Planes of the Second World War:Volume Five, Flying Boats 
- Crew: 3 to 4
- Length: 11.08 m (36 ft 4¼ in)
- Wingspan: 16.00 m (52 ft 6 in)
- Height: 4.47 m (14 ft 8 in)
- Wing area: 39.4 m2 (424 ft2)
- Empty weight: 1,388 kg (3053 lb)
- Gross weight: 2,155 kg (4,740 lb)
- Powerplant: 1 × Hispano-Suiza 9Qd, 261 kW (350 hp)
- Maximum speed: 195 km/h (121 mph)
- Cruising speed: 87 km/h (140 mph)
- Range: 1,100 km ( miles)
- Service ceiling: 4,850 m (15,900 ft)
- Green 1968, p.30.
- Green 1968, pp.30-31.
- Green 1968, p.31.
- Green, William. War Planes of the Second World War: Volume Five, Flying Boats. London:Macdonald, 1968. ISBN 0-356-01449-5.
Media related to Loire 501 at Wikimedia Commons