Noise

Fly Quiet Program

The use of designated noise abatement flight procedures to further reduce the impact of aircraft noise. The Fly Quiet Program provides comprehensive guidance for pilots to use designated quiet flight and operating procedures developed by the local airport authorities, the airlines, and Air Traffic Controllers. Fly Quiet Aviator’s Manuals are distributed  to airline pilots and [...]

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Noise Exposure Map (NEM)

Is a 14 CFR 150 requirement prepared by airports to depict noise contours. NEMs also take into account potential land use changes around airports.

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Noise Contour Map

A map representing average annual noise levels summarized by lines connecting points of equal noise exposure.

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Noise Abatement

A measure or action that minimizes the amount or impact of noise on the environs of an airport. Noise abatement measures include operating procedures and use or disuse of certain runways or flight tracks.

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Decibel (dB)

In sound, decibels measure a scale from the threshold of human hearing, 0 dB upward towards the threshold of pain, about 120-140 dB. Because decibels are such a small measure, they are computed logarithmically and cannot be added arithmetically. An increase of ten dB is perceived by human ears as a doubling of noise.

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Backblast

Low frequency noise and high velocity air generated by jet engines on takeoff.

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