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Aviatiou E ~ ~ v i r o ~ ~ r ~ ~ e ~ ~ t a l
Protection; Seventh
Meeting of the
Committee on Aircraft
Noise; and Fifth
Meeting of the
Operations Panel
Third Meeting of the
Committee on Aviation
Environmental
Protection
Fourth Meeting of the
Committee on Aviation
Environmental
Protection
Fifth Meeting of the
Committee on Aviation
Environmental
Protection;
Annex 6,
Amendment 26
a) improvements in the noise certification procedures;
b) introduction of a new Chapter 1 I for light helicopters;
c) expansion of Appendix 2 to include helicopters and replacement of
Appendix 4; and
d) introduction of guidance on applicability
a) simplification and clarification of the noise certification schemes
in Chapter 3 for propeller-driven aircraft;
b) harmonization of the helicopter Standards in Chapters 8 and 11
with national codes; and
c) alignment of the take-off mass in Chapter 10 with aitworthiness
limits.
a) introduction of a new definition for human performance in Chapter 1;
b) increase in stringency of Chapter 10 noise requirements for light
single-engincd propeller-driven aeroplanes,
c) changes of a detailed technical nature that are intended to improve the
consistency of Chapters 3, 8 and I I as well as Appendices 2 and 4;
d) new provisions concerning Human Factors in Part V; and
e) changes that have arisen from the ongoing harmonization of
the European Joint Aviation Requirements (JARS) and the United
States Federal Aviation Regulations (FARs).
a) increase in stringency of the turbojet and heavy propeller-driven
aeroplane noise requirements (new Chapter 4 - existing Chapter 4
becomes Chapter 12);
b) new provision relating to the recertification of Chapter 3 aeroplanes;
c) increase in stringency of the helicopter noise requirements of
Chapters 8 and 11 ;
d) change to clarify or redefine existing certification procedures, align
with harmonized JAWFAR requirements, introduce new provisions
relating to digital instrumentation;
e) introduction of guidance material on tilt-rotor aircraft noise
certification; and
Adopted
Effecrive
.- Applica-bl-e
24 March 1993
26 July 1993
1 1 November 1993
19 March 1997
21 July 1997
6 November 1997
26 February 1999
19 July 1999
4 November 1999
29 June 200 1
29 October 2001
2 1 March 2002
f) inclusion of an English language version of the noise certification
documents.
Annex 16 - Environmental Protection Volume I
Amendment Source(s)
Adopted
Effective
Applicable
8 Sixth Meeting of the a) ambient noise correction procedure including definitions for 23 February 2005
(4th Edition) Committee on Aviation "background noise", "ambient noise" and "broadband noise"; 11 July 2005
Environmental 24 November 2005
Protection b) allowablc wind speed limits during testing;
c) applicability language clarification including temporary changes in
type design and provisions to allow the recertification of Chapter 5
aeroplanes to Chapter 4;
d) rotorcraft-related technical issues; and
e) new Attachments G and H containing guidelines for the administration
of noise certification documentation and guidelines for obtaining
helicopter noise data for land-use planning purposes, respectively.
INTERNATIONAL STANDARDS
AND RECOMMENDED PRACTICES
PART I. DEFINITIONS
Aeroplane. A power-driven heavier-than-air aircraft, deriving Note 1.- Where the certi$cating authority finch that the
its lift in flight chiefly fiom aerodynamic reactions on sur- proposed change in design, configuration, power or mass is so
faces which remain fixed under given conditions of flight. extensive that a substantially new investigation of compliance
with the applicable airworthiness regulations is required, the
Aircrafi Any machine that can derive support in the atmos- aeroplane should be considered to be a new type design rather
phere from the reactions of the air other than the reactions than a derived version.
of the air against the earth's surface.
Note 2.- "Adversely" refers to an increase of more than
Associated aircraft systems. Those aircraft systems drawing 0.10 dB in any one of the noise cert@cation levels unless the
clcc&icau~neumatic Power &om an Power unit cumulative effects of changes in type design are tracked by an
during ground operations. approved procedure in which case "adversely" refers to a
cumulative increase in the noise level in any one of the noise
Auxiliary power-unit (APU). A self-contained power-unit on certification levels of more than 0.30 dB or the margin of
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