Pan Am began operating its fleet of Boeing 307 aircraft in the 1940s.
Pan Am began operating its fleet of Boeing 307 aircraft in the 1940s. The Boeing 307 was another model that propelled commercial aviation forwards, since it was the first to boast a pressurised cabin. This meant passengers (as pictured onboard here circa 1945) could enjoy a comfortable ride at around 20,000 feet. The model was also flown by TWA.