Sikorsky R-4 – USAAF Jigsaw Puzzle

Step into the early days of rotorcraft history with this puzzle featuring the Sikorsky R-4, the world’s first mass-produced helicopter and the first used by the United States Army Air Forces (USAAF). Developed in the 1940s, the R-4 was a groundbreaking aircraft that opened the door for modern helicopter design, serving in roles such as reconnaissance, rescue, and transport during WWII. This puzzle is ideal for aviation enthusiasts, military history buffs, helicopter collectors, and puzzle lovers. Piece by piece, you’ll assemble an image of the helicopter that started it all — a milestone in aviation history and a pioneer of vertical flight.