Sikorsky S-70 also uses the S-70 for special operations by the 160th Special Operations Aviation Regiment ("Night Stalkers") at Fort Campbell, Kentucky, designated as the MH-60K. The "Maple Hawk" was a variant offered by Sikorsky to the Canadian Forces during the tender to replace the military's search and rescue helicopters. The company name for the H-60/S-70 family is the S-70 Black Hawk. Sikorsky S-70 The Sikorsky S-70 is an American medium transport/utility helicopter family manufactured by Sikorsky Aircraft. It was developed for the US Army in the 1970s, winning a competition to be designated the UH-60 Black Hawk and spawning a large
Sikorsky S-20 Sikorsky S-20 The Sikorsky S-20 (named after its designer) or RBVZ S-XX (named after its manufacturer) was a Russian single-bay unequal span two-seat biplane designed by Igor Sikorsky in 1916. Displaying some Nieuport influence, it saw very little service during World War I. Five S-XX aircraft were built in September 1916, with the first two powered by the 100 hp Gnome rotary engine which had powered its predecessor, the RBVZ S-XVI. However, the other three were powered with the 120 hp Le Rhone engine, with which they were allegedly faster than the French Nieuport 17. The S-XX saw little service