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When built the Sikorsky S-40 was the largest amphibian in the world. Powered by four 428kW Pratt & Whitney Hornet engines, it had accommodation for 28 passengers and the added luxury of a smoking room with three chairs. It entered service with Pan American Airways on 19 November 1931.
 | A three-view drawing (734 x 912) |
| MODEL | S-40 |
| CREW | 4 |
| PASSENGERS | 40 |
| ENGINE | 4 x Pratt & WHitney "Hornet B", 425kW |
| WEIGHTS |
| Take-off weight | 15400 kg | 33951 lb |
| DIMENSIONS |
| Wingspan | 34.8 m | 114 ft 2 in |
| Length | 23.4 m | 76 ft 9 in |
| Height | 7.3 m | 23 ft 11 in |
| Wing area | 174.0 m2 | 1872.92 sq ft |
| PERFORMANCE |
| Max. speed | 210 km/h | 130 mph |
| Cruise speed | 185 km/h | 115 mph |
| Ceiling | 5550 m | 18200 ft |
| Range w/max.fuel | 925 km | 575 miles |
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