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Posted by on 19 Nov 2005 in Airline News

Boeing Tests Quiet Tech for Airliners

Boeing ANA (All Nippon Airways) 777-300ER

SEATTLE, November 14, 2005, An ANA (All Nippon Airways) 777-300ER flies low over 614 microphones on the runway at Glasgow, Montana, where Boeing Commercial Airplanes and its industry partners conducted a flight-test program proving new noise reduction technologies.

The microphones were used to visualize and record noise levels of the passing airplane. According to Boeing, engine fan-duct modifications and chevron exhaust designs achieved significant airplane cabin and community noise reductions.


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