The Stratford Army Engine Plant (SAEP) was a U.S. Army Tank-Automotive and Armaments Command installation and manufacturing facility located in Stratford, Connecticut, where it was sited along the Housatonic River and Main Street, opposite Sikorsky Airport. The plant was originally built in 1929 as Sikorsky Aero Engineering Corporations's manufacturing facility. The Sikorsky S-39, Sikorsky S-40 "Flying Forest", Sikorsky S-41, Sikorsky S-42 "Clipper" and Sikorsky S-43 "Baby Clipper" were built in this plant, which had a seaplane ramp for launching the aircraft into the Housatonic River.