TagNoise Abatement Procedures(8)

received your call to the noise information line on October 171h, 1999. Your message identified two areas of concern, low lli.rcraft over your neighborhood and jet noise after 10:00 p.m. The following information addresses these concerns. Small aircraft arriving and departing Sea-Tac Airport do not follow the same flight paths as the larger jets. This is primarily a safety and capacity issue. Because the smaller propeller aircraft fly at a slower rate,than the jets, they are turned early to move out of the way of the faster moving jets. Jet aircraft remain in a straight-out departure route for several miles. For the same reason, the propeller aircraft arrivals are also tum onto ' approach close in to the airport. Either way this puts some of the smaller aircraft over the ·Normandy Park area. I have enclosed a map, which depicts the propeller flight path, and your neighborhood is highlighted. Because these aircraft are arriving and departing, the altitudes are lower than aircraft overflying the area. Sea-Tac Airport does have a restriction on the older louder aircraft between the hours of 10:00 p.m. and 7:00a.m. The Port of Seattle does not legally have the ability to restrict the newer aircraft. Although tl~e newer engines are quieter, a large, heavily loaded jet airplane may still be very noticeable. We continue to work with the airline operators to minimize the number of louder aircraft at night. Weather conditions such as fog, or wind from the east may also increase noise levels for you…

SUBJECT Meeting Notice and Distribution of Working Paper Airport Noise Remedy Update--Jackson International Airport The next Technical Working Committee Meeting will be held on Wednesday~ January 25, 1984, in the Airport Administration Conference Room on the Third Floor of the Airport Terminal Building at 4:00 p.m. The agenda will include a review of the proposed criteria and boundaries for land acquisi- tion, purchase assurance and sound insulation programs, a presentation of the recommendations for changes/additions to the criteria and boundaries made by the Technical Working Committee's subcommittee on noise remedy program boundaries, and a review of the proposed "on-airport" noise abatement measures. In advance of the January 25 meeting, a copy of the "on-airport" component of the "Final Evaluation" working paper is attached for your review. As with the "off-airport" component of the working paper, comments should be _ received by me no later than January 31, 1984. Notice of the next set of neighborhood workshops (January 23 and will be sent to all those persons on the Update's Mailing List. you need additional copies of this notice, please give either me (382-3327) or Ms. Janet Bowlin (382-3320) a call. 2785p Attachment Distribution: 24, 1984) Should Technical Working Committee: Berwald, Black, Bohrer, Bray~ Carver; Conradi, Dana, Dinwiddie, Dodds, Drury, Gestner, Hall, Hamilton; Holstine ; Horner, Jhaveri, Johnson, Kos, Kumasaka, D. Legg, R. Legg, Nelson; Petterson, D. Robertson, Rus, Russell, Secrist, Shride, Simpson, Strander, Tranum, Vinton, Wing, Zalud King County: Miller, R. Robertson, Taratino Federal Aviation Administration: Coppinger, Saito Peat Marwick:…

Sixteen different programs have been identified that could improve the aircraft noise environment in the vicinity of Sea-Tac International Airport. These programs range from outright public acquisition and removal of all structures in certain areas to modification of zoning and other develop- ment control regulations as enforced by either King County or municipalities located near the Airport. All of the various improvement programs are generally described in the following section, together with a "pro and con" discussion in each instance. This review and analysis is intended to serve as a basic resource to in- dividuals and groups who participate or are interested in the determination of how best to improve the aircraft noise environment associated with the Sea-Tac facility. 850PARKS/850/13/01 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. LIST OF POTENTIAL NOISE IMPACT PROGRAMS: SEA-TAC/COMMUNITIES PLAN Acquisition - Open Spac1it ..... Acquisition - Conversion Acquisition - Leaseback Purchase Assurance - Guarantee Purchase Assurance - Assistance Purchase Assurance - Improvement Loan Purchase Assuran~e - Mortgage Insurance Purchase Assurance - HUD/FHA Easements - Permanent Easements Long Term Easements - Short Term Insulation - Extensive Insulation - Basic Development Controls - Construction Development Controls - Land Use 16. Property Advisory SerV-ices PARKS/850/13/02 / SEA-TAC/COMMUNITIES PLAN NOISE IMPACT PROGRAM ONE (ACQUISITION-OPEN SPACE), Page 1 of 3 Program One: Characteristics (a) Designated unit of government acquires through purchase all properties in .those areas subject to prescribed levels of noise generated as a result of aircraft operations at Sea-…

A detailed evaluation of noise abatement operational and technological changes for Sea-Tac Airport, including recommendations on reverse thrust operations, flight paths, aircraft modifications, and airport ground operations. The document contains handwritten comments and technical feasibility assessments for each proposed noise reduction measure.