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of assessing noise for land-use planning purposes.
1. Recommendation.- Where international comparison
of noise assessment around airports is undertaken, the methodology
described in Recommended Method for Computing
Noise Contours around Airports (Cir 205) should be used.
2. Recommendation- Contracting States that have
not yet adopted, or are considering changing a national noise
assessment methodology, should use the methodology described
in Recommended Method for Computing Noisc Contours
around Airports (Cir 205).
ANNEX 16 - VOLUME I
PART V. BALANCED APPROACH TO NOISE MANAGEMENT
Note.- Provisions in Part I1 of this Annex are aimed at
noise cert~jication which characterizes the maximum noise
emitted by the aircrafr. Howe~~enco ise abatement procedures
approved by national authorities and included in operations
manuals allow a reduction of noise during aircraft operations.
1. The balanced approach to noise management consists of
identifying the noise problem at an airport and then analysing
the various measures available to reduce noise through the
exploration of four principal elements, namely reduction at
source (addressed in Part I1 of this Annex), land-use planning
and management, noise abatement operational procedures and
operating restrictions, with the goal of addressing the noise
problem in the most cost-effective manner. All the elements of
the balanced approach are addressed in the Guidance on the
Balanced Approach to Aircraft Noise Management (Doc 9829).
2. Aircraft operating procedures for noise abatement
shall not be introduced unless the regulatory authority, based
on appropriate studies and consultation, determines that a
noise problem exists.
3. Recommendation.- Aircraft operating procedures
for noise abatement should be developed in consultation with
the operators thar use the aerodrome concerned.
4. Recommendation.- The factors to be taken into
consideration in the development of appropriate aircraft
operating procedures for noise abatement should include the
following:
a) the nature and extent of the noise problem including:
I ) the location of noise-scnsitirv areas; and
2) critical hour.<
b) the types of aircraft affected, iiiclzrding aircraft mass,
aerodrome elevation, temperatlrr.e considerations;
C) the types ofprocedures likely to be most effective;
d) obstacle clearances (PANS-OPS (Doc 8168), Volumes I
and 11); and
e) human performance in the application ofthe operating
procedures.
Note I.- See Annex 6, Part I, Chapter 4, for aeroplane
noise abatement operating procedures.
Note 2.- Guidance material on human performance can
be found in the Human Factors Training Manual (Doc 9683).
5. Recommendation.- Although in most countries, landuse
planning and management are the responsibility of national
and/or local planning authorities rather than aviation authorities,
ICAO has developed guidance material which should
be used to assist planning authorities in taking appropriate
measures to ensure compatible land-use management around
airports to the benejt of both the airport and the surrounding
communities (Airport Planning Manual, Part 2, (Doc 9184)).
ANNEX 16 - VOLUME I
APPENDIX 1. EVALUATION METHOD FOR NOISE CERTIFICATION OF
SUBSONIC JET AEROPLANES - APPLICATION FOR CERTIFICATE OF
AIRWORTHINESS FOR THE PROTOTYPE ACCEPTED BEFORE 6 OCTOBER 1977
Note 1.- See Part II, Chapter 2
Note 2.- The procedures in this appendix also apply to
certain aircrafr opes covered in Chapters 5 and 12.
1. INTRODUCTION
Note 1.- This noise evaluation method includes:
a) noise certijkation test and measurement conditions;
b) measurement of aeroplane noise received on the ground;
c) calculation of eflective perceived noise level from
measured noise data; and
d) reporting of data to the certificating authority and
correcting measured data.
Note 2.- The instructions and procedures given in the
method are clearly delineated to ensure uniformit). during
compliance tests, and to permit comparison between tests of
various types of aeroplanes, conducted in various geographical
locations. It applies only to aeroplanes within the
applicability clauses of Part II, Chapter 2.
Note 3.- A complete list of symbols and units, the mathematical
formulation of perceived noisiness, a procedure for
deterniiriirig atmospheric u~~enuutiuonf sounc(, and detailed
procedures for correcting noise levels from non-reference to
reference conditions are included in Sections 6 to 9 of this
appendix.
Note.- Many applications for a noise certificate involve
only minor changes to the aeroplane ope design. The resultant
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