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aeroplanes of 5 700 kg and less maximum certificated takeoff weight
and guidance on discharge of functions by States in the cases of lease,
charter and interchange of aircraft.
3 April 1974
3 August 1974
27 February 1975
Third Meeting of the
Comlnittec on Aircraft
Noise
3
(2nd Edition)
Fourth Meeting of the
Committee on Aircraft
Noise
Noise certification standards for future subsonic jet aeroplanes and
propeller-driven aeroplanes, other than STOL aeroplanes, and guidelines
for noise certiGcation of future supersonic aeroplanes, propellerdriven
STOL aeroplanes and installed APU and assodated aircraft
systems when operating on the ground.
21 June 1976
21 October 1976
6 October 1977
4
(3rd Edition)
Fifth Meeting of the
Committee on Aircraft
Noise
Introduction of a new parameter, viz, number of engines in the noise
certification standards for subsonic jet aeroplanes, improvements in
dctailed test procedures to ensure that the same level of technology is
applied to all types of aircraft, and editorial changes to simplify the
language and eliminate inconsistencies.
6 March 1978
6 July 1978
10 August 1978
1. Annex retitled Environmental Protection and to be issued in two
volumes as follows: Volume I - Aircrujl Noise (incorporating
provisions in the third edition of Annex 16 as amended by
Amendment 5) and Volume I1 - Aircrqft Engine Emissions.
11 May 1981
1.1 September 198 1
26 November 198 1
5
(Annex 16,
Volume I -
1st Edition)
Sixth Meeting of the
Committee on Aircraft
Noise
2. Introduction in Volume I of noise certification Standards for
helicopters and for future production of existing SST aeroplanes,
updating of guidelines for noise certification of installed APU and
associated aircraft systems and editorial amendments including
changes to units of measuremmt to bring the Annex in line with
Annex 5 provisions.
Introduction of Volume I1 containing Standards relating to the control
of fuel venting, smoke and gaseous emissions from newly
manufactured turbmjct and turbofan engines intended for subsonic and
supersonic propulsion.
6
(Annex 16,
Volume 11 -
1st Edition
Second M d n g of the
Committee on Aircra
Engine Emissions
30 June 1981
30 October 1981
18 Fcbruary 1982
First Meeting of the
Committee on Aviation
Environmental
Protection
Changes in test fuel specifications, Appcndix 4. 4 March 1988
31 July 1988
17 November 1988
2
(2nd Edition)
Second Meeting of the
Committee on Aviation
Environmental
Protection
a) increasd stringency of NO, emissions limits; 24 March 1993
26 July 1993
b) improvements in the smoke and gaseous emissions cerlilicalion 11 November 1993
procedure.
(vii)
INTERNATIONAL STANDARDS
AND RECOMMENDED PRACTICES
PART I. DEFINITIONS AND SYMBOLS
CHAPTER 1. DEFINITIONS
Where the following expressions are used in volume I1 of
this Annex, they have the meanings ascribed to them below:
Afterburning. A mode of engine operation wherein a
combustion system fed (in whole or part) by vitiated air is
used.
Approach phase. The operating phase defined by the time
during which the engine is operated in the approach operating
mode.
Climb phase. The operating phase defined by the time
during which the engine is operated in the climb operating
mode.
Dab of manufacture. The date of issue of the document
attesting that the individual aircraft or engine as appropriate
conforms to the requirements of the type or the date of an
analogous document.
Derivafive version. An aircraft gas turbine engine of the
sane generic family as an originally type-certificated engine
and having features which retain the basic core engine and
combustor design of the original model and for which other
factors, as judged by the certificating authority, have not
changed.
Note.- Attention is drawn to the difference between the
definition of *Yerived version of uircrafr" in Volume I of
Annex 16 and the defmition of "derivative version" in this
Volume.
Oxides of nitrogen. The sum of the amounts of the nitric
oxide and nitrogen dioxide contained in a gas sample
calculated as if the nitric oxide were in the form of nitrogen
dioxide.
Reference pressure ratio. The ratio of the mean total
pressure at the last compressor discharge plane of the
compressor to the mean total pressure at the compressor entry
plane when the engine is developing take-off bust rating in
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