TagNoise Remedy Program(48)

In September 2025, acoustical engineers tested 29 homes near Seattle-Tacoma International Airport to measure how much aircraft noise penetrates indoors. The study found that none of the homes exceeded the 45-decibel interior noise threshold required to qualify for federally funded soundproofing treatments, though 10 homes had at least one room above that level. The findings are part of SEA's Repair and Replacement Program, which evaluates whether previously soundproofed homes need updated windows and doors.

In August 2025, acoustical engineering firm HMMH measured indoor noise levels at 31 homes near Seattle-Tacoma International Airport to assess eligibility for the airport's Sound Insulation Repair and Replacement Program. Testing found that only one of the 31 homes met the FAA's minimum threshold of 45 decibels interior Day-Night Average Sound Level required to qualify for full sound insulation treatment, while seven additional homes had at least one room exceeding that level. The study used FAA-approved methods, including a Boeing 737-800 aircraft noise spectrum, to calculate how much airport noise penetrates each habitable room with windows closed.

Congressional amendment to Rules Committee Print 119-8 offered by Rep. Adam Smith of Washington, adding a new section to title XVII establishing a pilot program for sound insulation repair and replacement under 49 U.S.C. sections 47109 and 47110. The FAA would establish a pilot program at up to 4 large hub public-use airports providing a

Harris Miller Miller & Hanson Inc. (HMMH) conducted sound insulation measurements at 30 homes near Seattle-Tacoma International Airport in June 2025 to determine whether interior noise levels meet the federal threshold for sound insulation assistance. Using FAA-approved testing methods, the study found that only 3 of the 30 homes had median interior Day-Night Average Sound Levels (DNL) at or above the qualifying 45 dB threshold, while an additional 3 homes had individual rooms exceeding that level. The results inform eligibility decisions under the SEA Repair and Replacement Program, which is governed by FAA Advisory Circular 150/5000-9B and the Airport Improvement Program Handbook.

In February 2024, the Port of Seattle Commission proposed Order 2024-04, directing an assessment of previously installed noise insulation packages to be completed by end of 2024, with findings reported to Commissioners by January 21, 2025. The order also establishes a Sound Insulation Repair and Replacement Pilot Program, backed by an initial $5 million commitment, to identify and fix aging or ineffective insulation in homes near Seattle-Tacoma International Airport. Priority for repairs will be determined using the Port's equity index to ensure underserved communities are considered first.

The San Francisco International Airport (SFO) Second Chance Noise Insulation Initiative offers free acoustical improvements to eligible residential property owners who previously declined or did not respond to earlier phases of the Noise Insulation Program. To qualify, properties must fall within the 65-decibel CNEL noise contour, have been built before October 1, 1998, and owners must agree to grant a perpetual avigation easement to SFO and the City and County of San Francisco. Eligible improvements may include window and door replacement, caulking, weather-stripping, and central fresh air ventilation installation.