Sound Information: Sea-Tac Noise Abatement Report, Fourth Quarter 1992

This quarterly Sea-Tac Noise Abatement Report from the Port of Seattle (Q4 1992) tracks progress in reducing airport noise, highlighting that 71% of jet flights were operated by quieter Stage 3 aircraft, up from 63.4% the previous quarter. All airlines stayed within their allocated noise budgets, and new nighttime restrictions effective October 1, 1992 limited louder Stage 2 jets between midnight and 6:00 a.m. The report also outlines noise abatement flight procedures designed to route departing and arriving aircraft over industrial areas and water to minimize noise impacts on surrounding communities.

Notes

Port of Seattle quarterly Sea-Tac Noise Abatement Report for Q4 1992, published April 21, 1993, presented to the Sea-Tac Noise Advisory Committee. Reports Stage 3 fleet mix rising to 71.0% from 63.4% in Q3, nighttime limitations effective October 1, 1992 restricting Stage 2 flights between midnight and 6:00 am, with 84% of 1,765 monitored nighttime flights being Stage 3. Covers Noise Budget Program with NEL allocations for Alaska Airlines (AS), United Airlines (UA), Delta (DL), American Airlines (AA), Northwest (NW), Continental (CO), Federal Express (FM), and others. Describes ANOMS (Airport Noise and Operations Monitoring System) deployment, 79 homes insulated under Noise Remedy Program, and noise abatement flight procedures including Duwamish/Elliott Bay and Puget Sound departures for north and south flow conditions. TWA, USAir, Ryan International, China Eastern, Scandinavian Airlines, and Thai Airlines operated 100% Stage 3 fleets this quarter.

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