After American Airlines started its non-stop transcontinental service nine months ago, it went to the Civil Aeronautics Board for permission to boost the maximum flight time for air crews from eight to ten hours. American's new Douglas DC-7s could easily make the eastbound flight within the time limit, but strong prevailing winds at high altitudes often held westbound flights in the air for nine hours or more. American had no trouble getting permission from the CAB, which already had a more liberal rule for transoceanic flights. But last week the biggest U.S. airline ran into plenty of trouble from its...
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