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Edited by Paul RichfieldBy Fred George Spey Hush Kit Flunks Noise Test May 01, 2000
In early March, Dallas Airmotive flew the final FAR Part 36 noise test on a Gulf-stream II fitted with Stage III Technolo-gies' Rolls-Royce Spey hush kits -- with disappointing results. While the system enabled the G-II to meet Part 36 takeoff noise standards, ap-proach noise was 1.5 dB above the...

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