The Boeing Model 247, developed in 1933, was the first modern passenger airliner. It had an autopilot, pneumatically operated de-icing equipment, a variable-pitch propeller, and retractable landing gear. It took the Model 247 20 hours, with seven stops, to fly between New York and Los Angeles. However, because the 247 flew at 189 mph, its trip was seven and a half hours shorter than that made by any previous airliners. Seventy-six 247s were built. Boeing Air Transport flew 60 Model 247s. United Aircraft Corporation flew 10, and the rest went to Deutsche Lufthansa and a private owner in China. The 247s remained in airline service until World War II, when several were converted into C-73 transports and trainers. Some were still flying in the late 1960s. Along with the Douglas DC-2 that supplanted it, the Model 247 ushered in the age of speed, reliability, safety, and comfort in air travel. Mahogany Wood. Scale: 1/48. Wingspan 18 1/2 inches, Length 12 5/8 inches.