United Air Lines Boeing 247, 3-Mile-A-Minute, US Air Routes
Additional Details:
| The Boeing monoplanes of United Air Lines ushered in a New Era in Travel. With two 550 h. p. super-charged Wasp engines, they have a high speed of more than three miles a minute. They carry 10 passengers, 2 pilots, stewardess and cargo and can climb, fully loaded, more than 1,000 feet per minute and to 10,000 feet in ten minutes. They can sustain flight on only one engine. Mailed from the Dome of the Travel and Transport Building, A Century of Progress, Chicago. |
