First flight of McDonnell Douglas DC-10 on August 29, 1970.

The wide DC-10 cabin interior with its broad ceiling resulted in a roomy spaciousness. Two aisles ran the length of the cabin. Aisles and seats wider than those on earlier jet transports, provided a level of passenger comfort and convenience that set a new standard in air travel.
An advanced air conditioning and cabin pressurization system provided separate automatic temperature controls for the three main cabin sections and for the cockpit and lower galley, ensuring optimum comfort for all passengers, regardless of load density in the different areas.
The roomy flight deck of the DC-10 had stations for a three-member crew, plus seating for two observers. Prime considerations in cockpit design were simplicity, efficiency and low crew workload.
The DC-10 was the first commercial transport to be certified under the stringent FAA Stage 3 regulations governing sound levels for new aircraft, and it also complied with international noise standards.