- 
  
  It took Igor Sikorsky a couple of tries between 1909 and 1910.
 - 
  
  Igor Sikorsky took this helicopter for a test run, and it lasted for four minutes.
 - 
  
  Igor Sikorsky had an idea of a single rotor vertical flight craft.
 - 
  
  In Stratford, Connecticut the first practical helicopter,VS-300, took flight. Designed and built by Igor Sikorsky. It did everything it was supposed to. Fly, hover, and deal with what people were trying to solve.
 - 
  
  The S-50 was unofficially marketed to the U.S. Army.
 - 
  
  The S-67 Blackhawk was built in nine months. The S-67 Blackhawk was used for an attack mission. It(the helicopter) for 4 years starting in 1970. It was reported as very smooth and responsive. It was also very maneuverable.