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Sikorsky Y1C-28
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Description
  Manufacturer: | Sikorsky |
  Base model: | C-28 |
  Designation: | Y1C-28 |
  Designation System: | U.S. Air Force |
  Designation Period: | 1925-1962 |
  Basic role: | Transport |
  Status: | Prototype |
Specifications
Known serial numbers
 
 
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