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3Â Â This document describes the work performed by the research team of Landrum & Brown, Inc., and Barry Technologies, Inc., on ACRP Project 02-89, âA Primer and Framework for Consid- ering an Airport Noise and Operations Monitoring System (NOMS).â Airports use NOMSs to collect, manage, analyze, and communicate data such as aircraft flight tracks and flight proce- dures, flight altitude, aircraft identification, noise measurements, aircraft noise complaints, and weather. These systems can also be used to respond to complaints from the community and engage stakeholders with information about aircraft activity and related noise, thus fostering trust and transparency between an airport and its community. An airport NOMS generally consists of com- ponents such as software, computer processors, noise monitors, peripherals (printers, plotters, speakers, etc.), and, most importantly, staff. Airports that make the best use of and derive benefits from a NOMS do so by incorporating it into their overall noise management program. It is critical for an airport to establish clear tasks and programs to achieve its noise-related objectives such as active monitoring of airport operations, ongoing efforts to minimize aircraft noise exposure, and continuous handling of stakeholder expectations. A NOMS is an important tool in the airport noise management tool- box, but it cannot be solely relied on to improve the handling of airport noise issues. The proper operation, maintenance, and updating of a NOMS, supplemented by the development of a cus- tomized airport noise management programâdesigned to consider the airportâs operational, political, and environmental factorsâhas proven to be a wise investment for many airports. The objective of this Primer is to guide airports that are considering the installation of a NOMS by describing the benefits and costs of acquiring, maintaining, operating, and updating an airport NOMS. Additionally, the Primer describes the factors involved in deciding whether a NOMS is an appropriate tool to address airport noise issues or whether other tools and efforts are appropriate. The Primer provides information that is based on a literature review, airport questionnaires, vendor discussions, and the experience of the research team working with airports on noise- related issues; community engagement; noise management program development; and NOMS specifications, installations, and upgrades. Appendices A through K of the Primer include in-depth information referenced within the main body of the Primer. The appendices are not available herein, but can be found at www.nap.edu by searching on âACRP Research Report 237: Primer and Framework for Considering an Airport Noise and Operations Monitoring Systemâ. C H A P T E R 1 Introduction