Turboprops caught in noise rule

Aviation International News » March 2004
March 16, 2007, 10:41 AM

New designs for small business turboprop singles could be included in proposed changes to FAR Part 36 noise-certification rules. The more stringent levels are aimed primarily at reducing noise from newly designed primary training aircraft, but new turboprop singles certified under Part 23 would also be covered. The FAA said the more stringent requirements are intended to keep limits within the capability of current technology. The proposed rule includes a 6-dBA noise-limit reduction for airplanes with an mtow of more than 3,307 pounds, and the requirement would go into effect starting with TC and STC applications made after November 4. Comments are due June 10. For more information, contact the FAA at (202) 267-7703.

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