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AAAE CM Module 4 With Complete Solutions (Latest Update)
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AAAE CM Module 4 With Complete Solutions (Latest Update)
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AAAE CM Module 4 With Complete Solutions(Latest 2023 – 2024)
National Environmental Policy Act of 1969 (NEPA) - catalyst for public awareness and response to
aircraft noise issues, required assessment of noise effects for airports undertaking major projects
Aviation Noise Abatement Policy (ANAP) - Secretary of Transportation and FAA adopted. clarified
FAAs responsibility to reduce aircraft noise, abate the impact of noise on populated areas and attain
compatible land use adjacent to airports
FAR Part 36-Certificated Airplane Noise Levels - mandated change in design inturbojets to help
eliminate engine noise,Stages 1-4 with 4 being quietest, aircraft over 12,500# must meet Stage 4
Airport Safety and Noise Abatement Act of 1979 (ASNA) - basis for noise abatement planning at
airports, required FAA to establish requirements to simplify and standardize noise compatibility
planning and programs
Part 150 Land Use Compatability - adopted as a result of ASNA, noise control achieved through
compatible land uses around airport, developed Noise Exposure Maps (NEM) & Noise Compatibilty
Programs (NCP)
Airport Noise and Compatibility Act of 1990 (ANCA) - airports prohibited from adopting overly
restrictive or punitive anti-noise ordinances, created Part 161 Notice and Approval of Airport Noise
and Access Restrictions-placed a cap on number of Stage 2 aircraft over 75,000lbs maximum
takeoff weight allowed to operate in the US
3 Goals of ANCA - 1. phase out noisier aircraft
2. place limits on local user restrictions
3. establish non-restrictive noise abatement and land use actions
, Day/Night Average (DNL) - standard used for forecasting cumulative noise exposure under Part
150 studies, a 24-hour average sound level, with 10 decibel penalty from midnight to 7am and
10pm to midnight, noise is averaged every second over a 24hour period
Integrated Noise Model (INM) - determines DNL noise contours area for a specific mix of aircraft
and produces maps used for land compatibility
Aviation Environmental Design Tool (AEDT) - replced INM, software that models aircraft fuel
consumption, emissions, noise, and air quality consequences
75 DNL - FAA recommends airport own all land within the 75 DNL contour
65 DNL - Part 150 all land uses are compatible under 65 DNL
Airport Influence Area or Public Airport Disclosure Maps - reveal potential noise impacted areas to
boards and planning commissions
Air Traffic Noise Screening (ATNS) - computer program that assists determing if a change in
arrivals and departures will increase noise
Categorically Excluded - changes above 3,000' are excluded
FAR Part 150 Process - Airport sponsor can implement a noise mitigation program. Federal funding
may be available. Sponsor is required to base program on Noise Exposure Map (NEM) and Noise
Compatibility Program (NCP)
Airport and Airway Improvement Program (AAIP) - approved Noise Compatibility Program (NCP)
makes airport eligible for AIP noise set aside of the AAIP
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