1. AIRCRAFT NOISE The results of CAEP/5by
Gerard Bekebrede

2. Committee on Aviation Environmental Protection (CAEP)
CAEP is a Committee of ICAO’s Council
CAEP/5 was the fifth meeting of CAEP and was held in Montreal from 8 to 17 January (The 4th meeting was held in 1998.)
During CAEP/5 the activities of CAEP in the period were discussed
Recommendations were made to ICAO’s Council

3. CAEP: Terms of Reference
CAEP undertakes studies approved by the Council, related to
control of aircraft noise and gaseous emissions. CAEP shall
take into account:
certification schemes: technical feasibility, economic reasonableness and environmental benefit to be achieved;
developments in other associated fields, e.g. land use planning, noise abatement operating procedures, emission control through operational practices, etc.; and
progress in international and national programmes of research

4. CAEP: Workprogramme Noise (1)
assessment of the prospects for further reduction of aeroplane noise levels
review of existing noise certification procedures with a view to adapting them to better representing the operational procedures used by modern aeroplanes
several activities related to noise certification (update manuals, simplifying procedures/reducing costs, procedures for tilt rotor aircraft, etc.)

5. CAEP: Workprogramme Noise (2)
assessment of noise abatement procedures to reduce aircraft noise on the ground
collect information of aircraft noise monitoring around airports and update advisory documents on methodologies and applications of noise monitoring

6. CAEP:
Activities on noise were carried out in working groups:
WG1: Noise
WG2: Airports and Operations
FESG: Cost-benefit analyses
Steering Group meetings in 1999 and 2000
Full CAEP meeting in January 2001

7. CAEP/5: Results on aircraft noise
Recommendations of CAEP/5 included:
a new noise standard which is 10 decibels lower on a cumulative basis than the current Chapter 3 standards (for new aircraft design , effective 1 January 2006)
procedures for re-certification of existing aircraft meeting the new standard
more stringent noise standards for helicopters
additional/technical amendments of Annex 16

8. CAEP/5: Results on aircraft noise (2)
proposal for new take-off noise abatement procedures
publication of guidance material on noise abatement procedures, land use planning and Noise and Flight Path Monitoring
Agreement that noise management should be considered in the context of a balanced programme consisting of: reduction of noise at the source, land use planning and control, noise abatement procedures and operating restrictions

9. CAEP/5: Phase-out or operating restrictions
new noise standard is intended for certification purposes only
cost-benefit analyses do not support general phase-out of CH-3 aircraft in non-exempt regions
several members believed that regional phase-out is not supported by cost-benefit analyses

10. CAEP/5: Results on aircraft noise Next presentations session 3:
Working group 1 issues / -10 decibel stringence by Tom Connor
Importance of balanced approach by Elizabeth Andrade
Cost-benefit analyses by Upali Wickrama