Sikorsky S-42

The Sikorsky S-42 was a 1930s commercial flying boat designed and built by Sikorsky Aircraft to meet a 1931 requirement from Pan American World Airways (Pan Am) for a long-range transatlantic flying boat.

Read more about Sikorsky S-42:  Design and Development, Operational History, Variants, Accidents and Incidents, Surviving Examples, Specifications (S-42-A)