R5D-4 Skymaster

The Douglas R5D‑4 Skymaster was the United States Navy’s version of the popular C‑54 transport, entering service in 1944 during World War II. Based on the civilian DC‑4, the R5D‑4 featured strengthened landing gear, a larger internal fuel capacity, and naval‑specific avionics that allowed operation from carrier‑borne auxiliary airfields. Powered by four Pratt & Whitney R‑2000‑9 radial engines delivering 1,450 horsepower each, the aircraft could carry up to 28 troops, eight litters of medical stretchers, or roughly 10,000 pounds of cargo over a range of 3,800 miles. Its pressurized cabin and tricycle landing gear offered unprecedented comfort and versatility for long‑range maritime patrol, supply runs to Pacific islands, and post‑war humanitarian missions. After the war, many R5D‑4s were transferred to the U.S. Air Force and redesignated C‑54G, where they played crucial roles in the Berlin Airlift and early Cold‑War logistics. The aircraft’s robust construction, reliable powerplants, and adaptable interior set a standard for military transport that influenced later designs such as the C‑130 Hercules. Today, surviving R5D‑4s are treasured museum pieces that illustrate the transition from propeller‑driven to jet‑age logistics in aviation history.

Douglas

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