1. Short title This Act may be cited as the Decrease Noise Levels Act . 2. Findings Congress finds the following: (1) The day-night average sound level represents the total accumulation of all sound energy averaged over a 24-hour period. (2) The current Federal Aviation Administration guidelines for the day-night average sound level are 65. (3) Excessive airplane noise has been shown to negatively effect hypertension, heart disease, learning deficits in children, sleep patterns, sleep quality, and overall mood. (4) Approximately 10,000,000 Americans who are afflicted with some hearing loss can at least partially attribute this damage to exposure from noise. (5) Aircraft and airport noise is one of the most common quality of life nuisance issues in neighborhoods throughout the United States. 3. Day-night average sound level reduction The Administrator of the Federal Aviation Administration shall amend part 150 of title 14, Code of Federal Regulations, to decrease the threshold for the day-night average sound level to constitute significant noise from 65 to 60, and adjust relative ranges of day-night average sound level accordingly. 4. Community outreach regarding day-night average sound levels The Secretary shall ensure that in carrying out community outreach related to aviation day-night average sound levels, such outreach contains the results of the evaluation of alternative metrics to the current average day-night level standard under section 188 of the FAA Reauthorization Act of 2018 and the evaluation of alternative metrics carried out under section 173 of such Act. 5. Strategy and reporting Not later than 365 days after the date of enactment of this Act, the Administrator of the Federal Aviation Administration shall create a publicly available report that outlines a strategy to reduce the maximum day-night average sound level in all residential areas to 55 over the 10 years following the date of enactment of this Act.