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About ICAO
  • Overview
  • Strategic Plan 2026-2050
  • Latest News and Highlights
  • FAQs
  • List - ICAO Member States
  • ICAO Museum
  • ICAO Carbon Calculator
  • Report Misconduct
  • Contact ICAO
Diplomatic Bodies
  • ICAO Assembly (193 States)
  • Sessions of the Assembly
  • Resolutions in Force
  • ICAO Council (36 States)
  • President of the Council
  • Sessions of the Council
  • Council State Representatives
  • Air Navigation Commission
ICAO Secretariat
  • Secretary General
  • Air Navigation Bureau
  • Air Transport Bureau
  • Capacity Development and Implementation Bureau
  • Legal Affairs and External Relations Bureau
  • Administration Bureau
  • Regional Offices
Global Priorities
Strategic Goals
  • Every Flight is Safe and Secure
  • Aviation is Environmentally Sustainable
  • • CORSIA
  • • State Action Plans for Aviation CO2 Reduction
  • • Finvest Hub
  • Seamless, Accessible, and Reliable Mobility
  • No Country Left Behind
  • • Capacity Development and Implementation Support
  • Comprehensive Legal Framework
  • Economic Development
Enablers
  • ICAO Continuous Improvement
  • Innovation in Aviation
  • Next Generation Aviation Professionals
  • Gender Equality
  • ICAO Global Ambassadors Programme
  • ICAO Training
  • Partnerships and Resource Mobilization
Events
Featured Events
  • ICAO/AWG Joint Regional Workshop on Cross-Border Transferability of Aircraft (XBT) and Compliance with the Cape Town Convention (CTC)
  • ICAO Global Implementation Support Symposium 2026
  • Fourteenth Meeting of the Facilitation Panel (FALP/14)
  • 4th Civil Aviation Legal Advisers Forum (CALAF/4)
  • View the Full List of Coming and Past meetings and Events
  • Host your event at ICAO
Resources
Resources
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  • Publications
  • Annual Reports of the Council
  • Safety Audit Results - Interactive
  • Aviation Benefits Report
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  3. Noise Abatement Operational Procedures
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Noise Abatement Operational Procedures

Page Content

​The way aircraft are operated in day-to-day operations may also present impacts in terms of the noise that reaches the ground. ICAO assists on the development and standardization of low noise operational procedures that are safe and cost-effective. The possibilities include noise preferential runways and routes and noise abatement procedures for take-off and landing. The appropriateness of any of these measures depends on the physical lay-out of the airport and its surroundings, but in all cases the procedure must give priority to safety considerations.

ICAO's recommendations on operational procedures are contained in several documents:

  • Doc 8168 (Procedures for Air Navigation Services — Aircraft Operations (PANS-OPS)) Part I – provides guidance on noise preferential runways and routes, displaced thresholds, approach and landing operating procedures, and Noise Abatement Departure Procedures (NADPs).
  • Doc 8168 (Procedures for Air Navigation Services — Aircraft Operations (PANS-OPS)) Part II – includes the consideration of noise aspects on the planning and definition of departure routes, including the compromise involved in concentrating or spreading aircraft noise with the routes definition.
  • Doc 9931 - Continuous Descent Operations (CDO) Manual and Doc 9993 - Continuous Climb Operations (CCO) Manual provide guidance on CDO and CCO operations that may present benefits at both noise and emissions aspects.
  • Doc 9888 – Review of noise abatement research and development and implementation projects contains a summary of two surveys of key aviation stakeholders conducted in 2006 and 2008.
  • Doc 10031 Guidance on Environmental Assessment of Proposed Air Traffic Management Operational Changes provides  environmental assessment guidance to support sound and informed decision making when analysing proposed air traffic management (ATM) operational changes.
  • The ICAO Report on Good Practices of Noise Monitoring Systems (2025) explains how Airport Noise Monitoring Systems (NMS), together with the ICAO Balanced Approach and stakeholder coordination, can be used effectively to manage noise impacts at airports.

 

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