The Douglas DC-6 is a four-engine propeller-driven airliner that was first introduced in the late 1940s. Designed for commercial aviation, it was known for its reliability and spacious cabin, accommodating up to 60 passengers. The aircraft was widely used by airlines and military services, making it a significant part of aviation history. With a maximum range of about 2,400 miles, the DC-6 was capable of transcontinental flights. It featured advanced technology for its time, including a pressurized cabin and improved aerodynamics. The aircraft played a crucial role in the development of post-war air travel, paving the way for modern airliners.