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Tuesday, 9 May 1972
Page: 1496

Senator KEEFFE asked the Minister for Civil Aviation, upon notice:

Is it a fact that the Concorde aircraft while in flight will spread sonic boom up to 60 miles wide on the ground along the whole of its flight path, and is it also a fact that such sonic booms could cause pregnant women to have a miscarriage.

Senator COTTON The answer to the honourable senator's question is as follows:

The width of the sonic boom area resulting from a Concorde aircraft flying at 60,000 feet is about fifty miles. A person who is within this area will hear the boom as the aircraft passes overhead. The sound will taper off to the point that a person who is just outside the area will not hear it at all.

About500 supersonic flights per week have taken place within the continental limits of the United States since 1967, and I have been unable to find any evidence to suggest that sonic boom has caused miscarriages.

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