TagNoise Abatement Procedures(103)

Washington Senate Bill 5955 proposes creating a 'port district equity fund' to help large port districts—such as the one operating Sea-Tac Airport—pay for aircraft noise mitigation programs. The fund would be seeded with a $10 million appropriation for fiscal year 2025 and subsequently replenished by sales and use tax revenue collected on capital construction projects at the airport, with the port district required to match at least half of state-provided funds. The Department of Commerce would administer grants from the fund to cover costs such as inspecting and repairing soundproofing equipment in nearby homes and addressing any structural damage caused by its installation.

The Fly Quiet 2024 Scores report ranks airlines operating at Seattle-Tacoma International Airport based on four criteria: noise levels during take-offs and landings, adherence to SEA Noise Abatement flight procedures, compliance with ground maintenance engine run-up rules, and limiting late-night noise exceedances. Airlines receive a composite FQ Score, with top performers including Air Canada (717) and Frontier Airlines (706), while carriers with runup violations or poor noise adherence, such as Delta Air Lines (572) and Atlas Airlines (395), scored significantly lower. The report identifies Air Canada as a winning airline and Air France as the most improved, serving as a public accountability tool for noise management at Sea-Tac Airport.

The Port Authority of New York and New Jersey's 2024 Fly Quiet Program Annual Report for LaGuardia Airport outlines a voluntary initiative encouraging airlines to reduce noise by flying quieter aircraft and following noise abatement procedures. Airlines are scored on a 100-point scale, with half the points based on fleet noise quality—using FAA aircraft noise stage ratings from Stage 3 (loudest) to Stage 5 Plus (quietest)—and half based on community engagement and pilot training efforts. The program was developed through collaboration with airlines, the FAA, and the public to address the unique challenges of the busy New York/New Jersey airspace.

This Port of Seattle briefing, presented by Noise Programs Manager Stan Shepherd, covers key topics related to aircraft noise management at Seattle-Tacoma International Airport, including flight procedures, noise contours, and mitigation programs. It highlights a steady rise in noise complaints received through the Noise Information Hotline and online forms, growing from 2,172 inquiries in 2014 to 2,959 in 2016, with a small number of repeat callers accounting for the majority of contacts each year.

Minutes from a September 12, 2022 joint workshop between the Naples, Florida City Council and Naples Airport Authority cover discussions on the Airport Master Plan, noise reduction efforts, and community concerns about increasing jet traffic. Key topics included raising aircraft flight path ceilings to reduce noise, the possibility of reclassifying Naples as a Class C airport, and whether the Master Plan's growth projections were already outdated given a 40% surge in jet traffic. Residents and neighborhood association representatives called for equitable distribution of noise impacts and urged immediate action rather than waiting for a formal noise study to be completed.

The ELMAA Four Departure is a standard instrument departure procedure for Seattle-Tacoma International Airport (SEA) that routes aircraft southward after takeoff on runways 16L, 16C, or 16R. Departing aircraft climb on headings of 161°–165°, cross the PEAKK waypoint at or above 3,000 feet, then turn right to intercept the SEA R-230 radial toward the ELMAA fix, with onward transitions available to Hoquiam (HQM) or Corvallis (CVO). Notably, departures from runways 34L, 34C, and 34R are not authorized due to noise abatement restrictions, and minimum climb gradients of up to 560 feet per nautical mile are required depending on the runway used.

The Seattle Eight Departure (SEA8.SEA) is a standard instrument departure procedure for Seattle-Tacoma International Airport, outlining specific climb headings and routes for each runway to guide aircraft safely after takeoff. A notable noise-abatement provision requires large turbine-powered aircraft departing runways 34L, 34C, and 34R between 10 PM and 6 AM local time to be vectored over Puget Sound before proceeding on course. The procedure requires radar and assigns top altitude by ATC, with special minimum climb gradients applicable to runways 16R and 16L.