Aircraft Noise Level Reduction Measurement of Building Facades
ARP6973
This proposed revision of the Aerospace Recommended Practice (ARP6973) will provide minor edits to the existing document, plus an alternative third method for measuring the aircraft noise level reduction of building façades that is currently being validated. Airports and their consultants will be able to use any of the three methods presented in this revised ARP to determine the eligibility of structures exposed to aircraft noise to participate in an FAA-funded Airport Noise Mitigation Project, to determine the treatments required to meet project objectives, and to verify that such objectives are satisfied.
Rationale: The existing method for measuring the noise reduction of building facades requires either aircraft overflights or the use of an external loudspeaker to simulate aircraft noise exposure. There are many situations in the field where it is difficult to position an external loudspeaker according to the guidelines in the current ARP. An alternative test methodology has been proposed using a loudspeaker inside the building and measuring sound levels inside and outside that removes this limitation. The method has been successfully tested on a limited number of houses, and is currently being validated in a larger field study.
