|Wind tunnel model of the Loire 501|
|Role||Liaison flying boat|
|Primary user||French Navy|
Design and developmentEdit
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: 11.081 m (36 ft 4 1⁄4 in)
- Wingspan: 16.00 m (52 ft 6 in)
- Height: 4.47 m (14 ft 8 in)
- Wing area: 39.40 m2 (424.1 sq ft)
- Empty weight: 1,385 kg (3,053 lb)
- Gross weight: 2,150 kg (4,740 lb)
- Powerplant: 1 × Hispano-Suiza 9Qd 9-cylinder radial engine
- Maximum speed: 195 km/h; 105 kn (121 mph) at 1,000 m (3,280 ft)
- Cruise speed: 140 km/h; 76 kn (87 mph)
- Range: 1,099 km; 594 nmi (683 mi)
- Service ceiling: 4,850 m (15,910 ft)
- Time to altitude:
- 4 min to 1,000 m (3,280 ft)
- 16 min to 2,890 m (9,480 ft)
- Green 1968, p.30.
- Green 1968, pp.30-31.
- Green 1968, p.31.
Media related to Loire 501 at Wikimedia Commons