The Latécoère 631 was a civil transatlantic flying boat built by Latécoère, the largest ever built up to its time. The last Latécoère 631 was withdrawn from service in 1955 after the losses of aircraft no.7 (owned by Latécoère, lost at sea), 6 (Air France, lost in the Atlantic), 3 (SEMAF, off Cap Ferret) and 8 (France-Hydro, in Cameroon).

General characteristics:
Crew: 5
Capacity: 46
Length: 43.46 m (142 ft 6⅝ in)
Wingspan: 57.43 m (188 ft 4½ in)
Height: 10.1 m (33 ft 1½ in)
Wing area: 349.4 m² (3,760 ft² [2])
Empty weight: 32,400 kg (71,280 lb[2])
Loaded weight: 71,350 kg (137,300 lb)
Powerplant: 6× Wright R-2600-A5B Cyclone 14-cylinder air cooled radial engine, 1,194 kW (1,600 hp) each

Performance:
Maximum speed: 394 km/h (213 knots, 245 mph[2])
Cruise speed: 297 km/h (161 knots, 185 mph)
Range: 6,035 km (3,281 nm, 3,750 mi)
Service ceiling: m (ft)
Rate of climb: m/s (ft/min)
Wing loading: 92.7 kg/m² (19.0 lb/ft²)
Power/mass: 0.10 kW/kg (0.070 hp/lb)

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