C-54

C-54
Name	C-54
Type	Military transport aircraft
Manufacturer	Douglas Aircraft Company
Introduction	1942
Primary user	United States Army Air Forces
More users	United States Navy, Royal Air Force
Produced	1942–1947
Number built	1,170
Developed from	Douglas DC-4

C-54. The Douglas C-54 Skymaster was a four-engined military transport aircraft derived from the civilian Douglas DC-4. It served as a critical workhorse for the United States Army Air Forces during World War II and the subsequent Berlin Airlift, providing reliable long-range airlift capacity. Its robust design and performance made it a cornerstone of Military Air Transport Service operations throughout the early Cold War.

Design and development

The aircraft's origins trace directly to the commercial Douglas DC-4, with the Douglas Aircraft Company adapting the design to meet stringent military requirements. Key modifications included a strengthened fuselage floor, the addition of large cargo doors, and more powerful Pratt & Whitney R-2000 engines to handle demanding operational loads. Development was expedited under the pressures of World War II, with the prototype converted from an existing DC-4 airframe. The design proved exceptionally durable, facilitating its evolution into numerous specialized variants for roles such as Air-sea rescue and VIP transport.

Operational history

Entering service in 1942, the C-54 quickly became indispensable for transoceanic supply routes, including the vital Pacific War theater and the China Burma India Theater. It famously served as the primary aircraft for presidential transport, designated VC-54C and nicknamed "Sacred Cow" for Franklin D. Roosevelt. Its most celebrated role was during the 1948–1949 Berlin Airlift, where it operated tirelessly from bases in West Germany to circumvent the Soviet Union's Berlin Blockade. The type also saw extensive use during the Korean War with the newly formed Military Air Transport Service before being gradually supplanted by newer aircraft like the Lockheed C-130 Hercules.

Variants

The basic C-54A model was followed by the C-54B, which featured increased fuel capacity, and the C-54D, equipped with more powerful engines for the United States Navy. Specialized versions included the C-54E for optimized cargo carrying and the definitive C-54G, with improved interior arrangements. Naval equivalents were designated R5D within the United States Navy. Unique conversions comprised the VC-54C presidential aircraft, SC-54 rescue models, and the EC-54 for electronic calibration duties. The Royal Air Force operated the type under the name Skymaster I.

Operators

Primary military operators included the United States Army Air Forces and its successor, the United States Air Force, as well as the United States Navy and the United States Marine Corps. It was also supplied to numerous allies under programs like Lend-Lease, serving with the Royal Air Force, the French Air Force, and the Royal Canadian Air Force. Post-war, many aircraft were transferred to civilian carriers such as Pan American World Airways and Trans World Airlines, while others served with the air forces of nations like Nationalist China and South Africa.

Specifications (C-54G)

* **Crew:** 4 * **Capacity:** 50 troops or 32,500 lb (14,700 kg) cargo * **Length:** 93 ft 10 in (28.6 m) * **Wingspan:** 117 ft 6 in (35.8 m) * **Height:** 27 ft 6 in (8.38 m) * **Powerplant:** 4 × Pratt & Whitney R-2000 radial engines * **Maximum speed:** 275 mph (443 km/h) * **Range:** 4,000 mi (6,400 km) * **Service ceiling:** 22,000 ft (6,700 m)

Notable appearances in media

The C-54 has been featured in numerous films depicting its historical roles, such as in *The Big Lift* (1950), which dramatized the Berlin Airlift. It appears in wartime documentaries like those from the Why We Fight series and is often seen in archival footage related to Franklin D. Roosevelt and Harry S. Truman. The aircraft also has a presence in literature and model kits, cementing its iconic status in aviation history.

Category:United States military transport aircraft 1940–1949 Category:Douglas aircraft Category:Four-engined piston aircraft