The early morning stillness of Rio Harbor was suddenly broken by motor exhaust and propeller whine which increased to a roar as one after another of the twelve 600-horsepower motors was started. Soon the steward closed the ports, and the giant Do-X was under way for her 6,000-mile flight to New York. Half an hour’s taxiing was necessary to warm up the engines properly before lifting the 50-ton craft into the air.
It was still only twilight when the Do-X took off. A few circles were made over Rio, but in view of the hour the sleeping Cariocans could hardly be expected to respond to this polite gesture of farewell. The lighted cabins, with passengers reading the morning newspapers, suggested an early train carrying hard-working suburbanites to the city for their daily grind.