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Noise Models: Overview

Current Noise Models/Tools maintained by the FAA

Single Airport Focus

Airport Equivalency Model (AEM) – aircraft noise screening

Heliport Noise Model (HNM) – helicopter noise in the terminal area

Integrated Noise Model (INM) – high resolution aircraft noise analysis

Air Traffic Focus

Air Traffic Noise Screening Tool (ATNS) – noise screening for single aircraft type/single route analysis

NIRS Screening Tool (NST) – noise screening for multiple aircraft types/routes/airports

Terminal Area Route Generation, Evaluation, & Traffic Simulation (TARGETS) – noise screening for terminal area procedures

Noise Integrated Routing System (NIRS) – high resolution aircraft noise analysis for regional/multi-airport

Policy Focus

Model for Assessing Global Exposure to the Noise of Transport Aircraft (MAGENTA)

All models/tools share the same underlying noise engine developed by Volpe.

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