Sikorsky S-41

The Sikorsky S‑41 was a large amphibious flying boat built by the Sikorsky Aircraft Corporation in the late 1920s and early 1930s. Designed by Igor Sikorsky as a commercial passenger version of his earlier S‑38, the S‑41 first flew on 7 July 1930 and entered service with Pan American Airways and the United States Navy. The aircraft featured a twin‑engine, high‑wing configuration with two 420‑hp Wright Cyclone radial engines mounted on struts above the wing, which kept the propellers clear of spray during water operations. Its hull was of all‑metal construction, providing improved durability over earlier fabric‑covered models, and it accommodated up to 15 passengers in a comfortable cabin with large windows for sightseeing. The S‑41’s retractable landing gear allowed true amphibious capability, enabling take‑off and landing on both water and conventional runways. Although only a handful were built, the S‑41 demonstrated the practicality of large seaplanes for trans‑oceanic mail and passenger routes, influencing later designs such as the famous S‑42 “Clipper.” Its successful operation helped establish Sikorsky’s reputation as a pioneer of amphibious aircraft and contributed to the growth of early international air travel.