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  1. Copilot Answer
    National originUnited States
    StatusIn very limited use
    How the DC-4 Ruled the Skies
    How the DC-4 Ruled the Skies
    The Douglas DC-4 is an iconic four-engine propeller airliner that played a vital role in World War II, the Berlin Airlift, and the development of civil aviation.
    Design and development

    Following proving flights by United Airlines of the DC-4E, it became obvious that the 52-seat airliner was too inefficient and unreliable to operate economically and the partner airlines, American Airlines, Eastern, Pan Americ… See more

    Operational history

    The DC-4/C-54 proved to be a popular and reliable type, with 1,245 being built between May 1942 and August 1947, including 79 postwar DC-4s. Several remain in service as of 2022.
    Douglas co… See more

    Variants

    DC-4 Main production airliner, postwar Canadair North Star Canadian production of a Rolls-Royce Merlin-powered variant, plus a single example powered with Pratt & Whitney R-2800s
    Aviation Tr… See more

    Surviving aircraft

    Very few DC-4s remain in service today.
    • The last two passenger DC-4s operating worldwide are based in Johannesburg, South Africa. They fly with old South African Airways (SAA) livery. They are ZS-AUB Outen… See more

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