Aviation Safety and Noise Abatement Act (1979)
Congress passed the act, establishing the framework for airport noise compatibility planning. The FAA's Part 150 program came from this law, allowing airports to study noise and develop mitigation plans.
Airports began conducting noise studies and developing mitigation programs.
The 65 DNL threshold became the standard for significant noise exposure, and the FAA has funded sound insulation for thousands of homes nationwide.
This grant is part of the Part 150 framework — Dane County is using the program to soundproof homes in the 65-69 DNL zone.
