Harmonization of Noise Certification Standards for Propeller-Driven Small Airplanes

This final rule amends FAA regulations regarding airplane noise certification standards. These changes are necessary to harmonize two technical items with international standards and provide uniform noise certification standards for airplanes certificated in the United States and Joint Aviation Authorities (JAA) countries. This amendment will simplify airworthiness approvals for import and export purposes. We anticipate that the changes to these two items will apply only to a small number of older-technology airplanes.