Environment | Civil Aviation Authority

A Low Noise Arrival Metric

A Practical Method for Estimating Operational Lateral Noise Levels

A Technical Evaluation of Initial Trials of Quieter Approach Procedures at London ( Heathrow) Airport Summary Report

Accuracy of data in the Gatwick Noise and Track Keeping System

Accuracy of Data in the Noise and Track Keeping System at the London Airports

ACP environmental benefits report

Adverse Effects of Night-time Aircraft Noise

Air Services at UK Regional Airports: An Update on Developments

Aircraft movements, fleet mix and noise quota usage at Gatwick, Heathrow and Stansted

Aircraft Noise and Annoyance: Recent findings

Aircraft Noise and Children’s Learning

Aircraft Noise and Health Effects – a six monthly update (March 2020 – September 2020)

Aircraft Noise and Health Effects: A six-month update

Aircraft Noise and Health Effects: A six-month update

Aircraft Noise and Health Effects: A six-month update

Aircraft Noise and Health Effects: A six-month update

Aircraft Noise and Health Effects: A six-month update (September 2020 - March 2021)

Aircraft Noise and Health Effects: A six-month update (April 2019 – September 2019)

Aircraft Noise and Health Effects: A six-month update (September 2019 – March 2020)

Aircraft Noise and Health Effects: A six-month update (September 2022 – March 2023).

Aircraft Noise and Health Effects: An update (2014-2022)

Aircraft Noise and Health Effects: Annual update (April 2018 – April 2019)

Aircraft noise and health effects: Recent findings

Aircraft Noise and Sleep Disturbance: A Review

Aircraft noise, sleep disturbance and health effects

Aircraft Noise, Sleep Disturbance and Health Effects: A Review

Airspace change masterplan – assessment framework

Airspace change masterplan - CAA acceptance criteria

Airspace Change Masterplan: Approach to Strategic Environmental Assessment and Habitats Regulations Assessment

Airspace Change Masterplan: Habitats Regulations Screening Report

Airspace Change Masterplan: Strategic Environmental Assessment Scoping Report

Airspace Change Proposal

Airspace change proposal consultation assessment

Airspace change proposal consultation assessment

Airspace change proposal consultation assessment

Airspace change proposal consultation document

Airspace change proposal environmental assessment

Airspace change proposal environmental assessment

Airspace change proposal environmental assessment

Airspace change proposal environmental assessment

Airspace change proposal environmental assessment

Airspace change proposal module E: South coast changes

Airspace change proposal operational assessment

Airspace change proposal operational assessment

Airspace change proposal operational assessment

Airspace change: outcome of the consultation on a decision-making process for PPR (planned and permanent redistribution of air traffic) proposals

Airspace Design Guidance: Noise Mitigation Considerations when Designing PBN Departure and Arrival Procedures

An investigation into the influence of background ambient noise levels on attitudes to aircraft noise

Annex 1 to CAP 1346: PIR route 1 analysis

Annex 1 to CAP 1346: PIR route 2 analysis

Annex 1 to CAP 1346: PIR route 3 analysis

Annex 1 to CAP 1346: PIR route 4 analysis

Annex 1 to CAP 1346: PIR route 5 analysis

Annex 1 to CAP 1346: PIR route 6 analysis

Annex 1 to CAP 1346: PIR route 7 analysis

Annex 1 to CAP 1346: PIR route 8 analysis

Annex 1 to CAP 1346: PIR route 9 analysis

Annex 2 to CAP 1346: PIR Environmental Analysis report

Annex 3 to CAP 1346: PIR Operational and Technical report

Annex 4 to CAP 1346: PIR Correspondence Assessment

Annex 5 to CAP 1346: PIR Correspondence database

Annex 6 to CAP 1346: CAA IFP Recommendations report

Appendix A: List of stakeholders

Appendix A: References

Appendix B: Glossary

Appendix C Block A Initial screening checklist

Appendix C: Illustration of air traffic in the south west

Appendix D: Stakeholder list

Appendix E: Background on London area flight paths (built up by airport)

Appendix F: London City and Biggin Hill flight density slices

Appendix F: London Stansted airport departures shown in 1,000 ft 'slices'

Appendix G: Detailed map of the area southeast of Stansted Airport showing flight densities

Appendix H: Detailed route usage tables

Appendix H: Population analysis for daytime overflights

Appendix I: Sample details

Appendix J: Standard tables of aircraft noise impact

Assessment of Revised Heathrow Early Mornings Approach Procedures Trial

Aviation Strategy – Noise Forecast and Analyses

Biodiversity and Resilience of Ecosystems Duty Report 2019

Brief to SARG group director

Building Trust in AI: 5 Principles for AI and Autonomy

CAA Consultation assessment

CAA decision letter to Gatwick Airport Limited

CAA decision letter to NATMAC

CAA Environmental assessment

CAA Information Notice

CAA Information request

CAA Information request from the ANSP

CAA LAMP decision: part applicable to each phase 1A modules A-E

CAA LAMP decision: part applicable to phase 1A module A

CAA LAMP decision: part applicable to phase 1A module B

CAA LAMP decision: part applicable to phase 1A module C

CAA LAMP decision: part applicable to phase 1A module D

CAA LAMP decision: part applicable to phase 1A module E

CAA letter to Gatwick Airport Limited dated 9 February 2018

CAA Policy on Minimum Standards for Noise Modelling

CAA Policy on Secretary of State Call In for Airspace Change Proposals

CAA Post Implementation Review (PIR) letter

CAA response following consultation on proposals for a revised airspace change process

CAA Response to 2021 Government Consultation on the Future of Transport Regulatory Review: Future of Flight

CAA Response to the Airports Commission Air Quality Assessment Paper

CAA response to the Airports Commission consultation, Increasing the UK’s long-term aviation capacity

CAA Response to the Airports Commission: Discussion Paper 5, Aviation Noise

CAA’s environmental sustainability strategy

CAA’s environmental sustainability strategy – Our areas of work

CAP 1037 - Better information about UK aviation: summary of consultation responses

CAP 1117 Heathrow Airport Operational Freedoms Trial: The Civil Aviation Authority’s supplementary views on Heathrow Airport’s end-of-trial report

CAP1531 Annex A AIP Chart - LAM 2x

CAP1531 Annex B UK AIP Chart – extant conventional SID

CAP1531 Annex C UK AIP chart – corrected conventional SID (Interim Draft v3)

CAP1531 Annex D Assessment of the Route 4 Modified RNAV 1 SID

CAP1531 Annex E Assessment of RNAV 1 SID route design for Route 4 in strong winds

CAP1531 Annex F Gatwick Airport noise abatement procedures – extract from UK AIP (AD 2.21)

CAP1531 Annex G Comparison of radar track diagrams for Route 4, up to 4000ft

CAP1531 Annex H Sample radar track diagrams illustrating traffic patterns for strong wind days

CAP1531 Annex I Sample radar track diagrams illustrating traffic patterns for light wind days

CAP1531 Annex J Comparison of density plot diagrams

CAP1531 Annex K Operational feedback from airlines to GAL, and CAA consideration of that feedback

CAP1531 Annex L CAA assessment of complaints data submitted to GAL by non-aviation stakeholders

CAP1531 Annex M CAA “gate analysis” of Route 4 departures

CAP1531 Annex N Further possible operational changes for potentially reducing impacts on local communities – options for consideration by GAL

CAP1531 Annex O Assessment of separate complaints/feedback received by the CAA

CAP1531 CAA comparison slides - track density plot diagrams (July 2016)

CAP1531 CAA comparison slides - up to 4000ft track dispersion diagrams (July 2016)

CAP1531 Daily track dispersion diagrams (July 2016)

CAP1531 METAR Data (July 2016)

CAP1531 Track density plot diagram (July 2016)

CAP1531 Track dispersion diagram - altitude band 4000-5000ft (July 2016)

CAP1531 Track dispersion diagram – altitude band 5000-6000ft (July 2016)

CAP1531 Track dispersion diagram - altitude band 6000-7000ft (July 2016)

CAP1531 Track dispersion diagram - up to 4000ft (July 2016)

CAP1531 Track dispersion diagrams by aircraft type (July 2016)

CAP1531 Track dispersion diagrams by airline and aircraft type (July 2016)

CAP1531 Track dispersion diagrams illustrating the vectoring traffic patterns in the area of Horley

CAP2251a SoNA 2014 Aircraft Noise and Sleep - Further Analysis - Peer Review

Climate change adaption report

Consultation feedback report

Consultation on Definition of Category D for Minimum Standards for Noise Modelling

CONV SID requirements letter

Definition of overflight

Deliberative research on the provision of environmental information to consumers

Departure Noise Limits and Monitoring Arrangements at Heathrow, Gatwick and Stansted Airports

Departure Noise Mitigation: Main Report

Departure Noise Mitigation: Phases of a departure

Departure Noise Mitigation: Summary Report

Design feedback report

Emerging Aircraft Technologies and their potential noise impacts

Emerging Technologies: The effects of eVTOL aircraft noise on humans

Environment Programme 2014 - 2016

Environmental charging - Review of impact of noise and NOx landing charges

Environmental charging - review of impact of noise and NOx landing charges: update 2017

Environmental Metrics for FAS

Environmental Noise and Health: A Review

Exemption From Classification Provisions of Mpox Virus Not Including Cultures of Mpox

Flight path accuracy of the Gatwick Noise and Track Keeping System

Flying on Business – a Study of the UK Business Air Travel Market

Framework briefing

Framework briefing

Framework briefing follow on record for module A

Further aviation consultation

Guidance for NERL in preparing its business plan for Reference Period 3

Guidance for NERL in preparing its Business Plan for Reference Period 3: Consultation document

Guidance on Airspace Change Process for Temporary and Trial Airspace Change Proposals

Helicopter Flight in Degraded Visual Conditions

Helideck Design Considerations - Environmental Effects

Impacts of space weather on aviation

Information on aviation's environmental impact

Interface for Luton and Northolt airports

Interim Response to CAA Consultation on Minimum Standards for Noise Modelling

Justification and further detail for proposed changes

Justification and further detail for proposed changes (2)

Key Considerations for Airspace Integration within an Urban Air Mobility Landscape

London airspace consultation change log

London City Airport RNAV replications

London City Airport RNAV replications: stakeholder consultation document

London Gatwick Airport Strategic Noise Maps 2006

London Heathrow Airport Strategic Noise Maps 2006

London Stansted Airport Strategic Noise Maps 2006

London Stansted Airport: departure route proposal

Managing Aviation Noise

Measurement and Modelling of Aircraft Noise at Low Levels

Metrics for Aircraft Noise

Modification recommendations to meet requirements letter to Gatwick

Modification requirements letter to Gatwick

Modifications to Gatwick Airport departure Route 4

Monthly Track Dispersion Plots in Altitude Bands (Mar 2017)

NATS departure route proposal at London Stansted Airport consultation

NATS departure route proposal at London Stansted Airport summary

NATS final report

NATS London airspace consultation executive summary

NATS south coast airspace change proposal consultation feedback report part B

NATS Stansted Airport departures consultation feedback report

Night Time Ground Noise

Noise data for the first 17 months of Boeing 787 operations at Heathrow airport

Noise data for the first three years of Airbus A350 operations at Heathrow airport

Noise Data from the First Year of Scheduled Concorde Operations at Heathrow Airport - London

Noise Envelopes

Noise Exemption for Microlight Aeroplanes

Noise measurements from eVTOL aircraft: A review of available data

Noise Measurements of Reverse Thrust at Heathrow and Stansted Airports

Noise monitor positions at Heathrow, Gatwick and Stansted Airports

Offshore Helideck Environmental Research

Operational report

Operational report

Operational report including our analysis on airspace safety and efficiency

Outcome of the CAA consultation on draft airspace design guidance

Outcome of the consultation on a draft Airspace Modernisation Strategy 2022–2040

Part A: Introduction and overview

Part C: Proposed changes between 4,000 ft and 7,000 ft further away from Farnborough Airport

Part E: Aviation technical information

Part F: Appendices

Policy and Guidelines on Wind Turbines

Precision of Aircraft Noise Measurements at the London Airports

Prioritisation Principles for the CAA’s Consumer Protection, Competition Law and Economic Regulation Work

Proposed changes between 2,500ft and 7,000ft in the vicinity of Southampton and Bournemouth

Proposed changes to London City and Biggin Hill routes

Proposed changes to London City, Biggin Hill and Southend routes over 7,000 ft

Proposed methodology for estimating the cost of sleep disturbance from aircraft noise

Quota Count validation study at Heathrow Airport

Quota Count Validation Study: Noise Measurements and Analysis

Report of the CAA’s Post Implementation Review of the Implementation of RNAV-1 Standard Instrument Departures at Gatwick Airport

Response and Decision following CAA’s Consultation on the Definition of Category D for Minimum Standards for Noise Modelling

Response to the Airports Commission Discussion Paper 3: Aviation and Climate Change

Results from CAA Noise Impact Survey

Review of Arrival Noise Controls

Review of Departure Noise Limits at Heathrow, Gatwick and Stansted Airports

Review of the Departure Noise Limits at Heathrow, Gatwick and Stansted Airports: Additional Study of Boeing 747 Departures

Review of the Departure Noise Limits at Heathrow, Gatwick and Stansted Airports: Effects of Take-off Weight and Operating Procedure on Noise Displacement

Review of the Quota Count (QC) System: Re-analysis of the Differences between Arrivals and Departures

Revised Future Aircraft Noise Exposure Estimates for Heathrow Airport

Social Licence to Operate: Concept Guide for New Technologies

SoNA 2014 Aircraft Noise and Annoyance - Further Analysis - Peer Review

SoNA 2014 Technical Peer Review (Phase 2)

Speaking a Common Language: A terminology framework for AI

Stakeholder feedback

Stansted ACP environmental benefits report

Stansted Airport: A Study of Aircraft Noise Insulation Boundaries

Strategic Noise Maps for Gatwick Airport 2016

Strategic Noise Maps for Heathrow Airport 2016

Strategic Noise Maps for Stansted Airport 2016

Study on the population trends in the vicinity of ten UK civil airports

Submitted airspace change proposal

Submitted airspace change proposal

Supplementary operational report

Survey of Noise Attitudes (SoNA) 2014: Aircraft Noise and Annoyance Peer Review

Survey of Noise Attitudes (SoNA) 2014: Aircraft Noise and Sleep Disturbance Peer Review

Survey of Noise Attitudes (SoNA) 2014: Technical Peer Review

Survey of Noise Attitudes 2014: Aircraft Noise and Annoyance, Further Analysis

Survey of Noise Attitudes 2014: Aircraft Noise and Annoyance, Second Edition

Survey of Noise Attitudes 2014: Aircraft Noise and Sleep Disturbance

Survey of Noise Attitudes 2014: Aircraft Noise and Sleep Disturbance, Further Analysis

Survey of Noise Attitudes 2014: Data Files

Techniques used by ERCD for the Measurement and Analysis of Aircraft Noise and Radar Data

The 2014 Survey of Noise Attitudes (SoNA) Technical Report (final report)

The CAA Aircraft Noise Contour Model : ANCON Version 1

The CAA Aircraft Noise Contour Model : ANCON Version 1

The Civil Aviation Authority’s policy for carrying out its information duties under the Civil Aviation Act 2012

The Effects of Aircraft Noise on Biodiversity

The Noise and Number Index

The Noise Benefits Associated with Use of Continuous Descent Approach and Low Power / Low Drag Approach Procedures at Heathrow Airport

The UK Civil Aircraft Noise Contour Model ANCON - Improvements in Version 2

The Use of Leq as an Aircraft Noise Index

Tranquillity: An overview

UK Annual Safety Review 2019

UK Annual Safety Review 2020

UK Aviation Environmental Review 2023

UK General Aviation opportunities after leaving EASA – a consultation

United Kingdom Aircraft Noise Index Study: Main Report

Visualisation of Offshore Gas Turbine Gas Plumes

Wildlife and Natural Environment (Scotland) Act 2011 Section 36 The Biodiversity and Resilience of Ecosystems Duty Report 2020