Thread: Sergei Sikorsky, factory technician for first operational helicopters
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Old 29th September 2025, 00:08
DavidIsby DavidIsby is offline
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Sergei Sikorsky, factory technician for first operational helicopters
https://living-legends-of-aviation.m...ergei-sikorsky

https://www.lockheedmartin.com/en-us...1925-2025.html

https://www.courant.com/2025/09/20/c...h-to-aviation/
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