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New ICAO publication (Doc 9889)

Doc 9889, Airport Air Quality Manual. Third Edition, 2023.

This manual covers an evolving area of knowledge and represents currently available information that is sufficiently wellestablished to warrant inclusion in international guidance. This manual covers issues related to the assessment of airportrelated air quality that are either specifically within the remit of the International Civil Aviation Organization (ICAO) (such as main engine emissions) or where there is an established understanding of other non-aircraft sources (such as boilers, ground support equipment and road traffic) that will contribute, to a greater or lesser extent, to the impact on air quality.

There are potential emissions source issues relevant to, but not covered in, this manual (for example, forward speed effects of aircraft, influence of ambient conditions on aircraft emissions, brake and tire wear) that have been identified and are the subject of further investigation by ICAO, Member States, observer organizations or other expert organizations, taking into account practical experience.

This edition of the manual includes chapters on the regulatory framework and drivers for local air quality measures; emissions inventory practices (including a detailed sophisticated aircraft emissions calculation approach); dispersion modelling; airport air quality measurements; mitigation options and trade-offs. Throughout the document, additional

references are provided for those interested in exploring these topics in further detail.


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