Sikorsky remained active in the development of new helicopter technologies, focusing on improving performance, reliability, and versatility. His company produced iconic helicopters like the S-58, S-61 (SH-3 Sea King), and S-64 Skycrane.

Sikorsky Aircraft becomes a division of United Aircraft Corporation. Previously it was the United Aircraft and Transport Corporation. This allowed for further development of aircraft using all available resources.

Sikorsky received numerous awards and honors throughout his career, recognizing his contributions to aviation. These included the National Medal of Science, the Wright Brothers Memorial Trophy, and induction into the National Aviation Hall of Fame.

Even after retiring from active management of Sikorsky Aircraft, Igor Sikorsky remained a consultant and continued to follow the advancements in aviation technology. He served as an honorary engineering advisor.

Igor Sikorsky passed away in Easton, Connecticut, at the age of 83. His legacy as a pioneer of both fixed-wing and rotary-wing aircraft remains profound. He is widely regarded as the 'father of the helicopter'.