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AAAE CM Module 4 questions and answers verified answers||Latest 2024/2025
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AAAE CM Module 4 questions and answers verified answers||Latest 2024/2025
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AAAE CM Module 4National Environmental Policy Act of 1969 (NEPA) - ANScatalyst for public awareness and
response to aircraft noise issues, required assessment of noise effects for airports undertaking
major projects
Aviation Noise Abatement Policy (ANAP) - ANSSecretary 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 - ANSmandated 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) - ANSbasis 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 - ANSadopted 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) - ANSairports 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 - ANS1. 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) - ANSstandard 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) - ANSdetermines DNL noise contours area for a specific mix of
aircraft and produces maps used for land compatibility
Aviation Environmental Design Tool (AEDT) - ANSreplced INM, software that models aircraft
fuel consumption, emissions, noise, and air quality consequences
75 DNL - ANSFAA recommends airport own all land within the 75 DNL contour
, 65 DNL - ANSPart 150 all land uses are compatible under 65 DNL
Airport Influence Area or Public Airport Disclosure Maps - ANSreveal potential noise impacted
areas to boards and planning commissions
Air Traffic Noise Screening (ATNS) - ANScomputer program that assists determing if a change
in arrivals and departures will increase noise
Categorically Excluded - ANSchanges above 3,000' are excluded
FAR Part 150 Process - ANSAirport 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) - ANSapproved Noise Compatibility Program
(NCP) makes airport eligible for AIP noise set aside of the AAIP
land aquisition - ANSmost effective measure for reducing noise
sound proofing - ANSlowering dB inside to max of 50 dB in the 65DNL contour, 30-35dB interior
for homes, 45-50 for public use buildings, aviation easement should be included with
soundproofing
Noise barriers - ANSlocated along perimeter of airport to help attenuate ground noise
Preferential Runway Use - ANSInformal affect aircraft over 12,500lbs, Formal require Letters of
Agreement,
Advantages of Conducting a Part 150 study - ANS1. public relations
2. intergovernmental coordination
3. Airport facilities development
4. improved land use planning and noise abatement
Disadvantages of a Part 150 study - ANS1. heightened controversy
2. unrealistic expectations
3. uncooperative participants
FAR Part 161 Notice and Approval of Airport Noise Access Restrictions - ANSpart of the Airport
Noise and Compatibility Act (ANCA), requires airports seeking to impose new Stage 3 noise
rules such as curfews to perform a cost benefit analysis including a comprehensive study of
impacts before seeking FAA approval, has more public involvement
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