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JSA sea level static conditions.
Note.- Methods of measuring refeence pressure rutio
are given in Appendix 1.
Smoke, Tbe carbonaceous materials in exhaust emissions
which obscure the transmission of light.
Smoke Number. The dimensionless term quantifying
smoke emissions (see 3 of Appendix 2).
Tde-offphase. The operating phase defined by the time
during which the engine is operated at the rated output.
Rated output. For engine emissions purposes, the
maximum powerlthrust available for take-off under 'normal
operating conditions at ISA sea level static conditions without
the use uf water injection as approved by the certificating
authority. Thrust is expressed in kilonewtons.
TwiJground idle. The operating phases involving taxi and
idle between the initial starting of the propulsion engine(s)
and the initiation of the take-off roll and between the time of
runway turn-off and final shutdown of all propulsion
engine(s).
Unburned hydrocarbons. The total of hydrocarbon
compounds of all classes and molecular weights contained in
a gas sample, calculated as if they were in the form of
methane.
ANNEX 16 - VOLUME I1
CRABTER 2. SYMBOLS
Where the following symbols are used in Volume ll of this F*, Rated output with afterburning applied
Annex, they have.the meanings ascribed to them below:
HC Unburned hydrocarbons (see definition)
CO Carbon monoxide NO N i ~ocxi de
D, The mass of any gaseous pollutant emitted during NO, Nitrogen dioxide
the reference emissions landing and take-off cycle
NO, Oxides of nitrogen (see &finition)
F, Thrust in International Standard Atmosphere (XSA),
sea level conditions, for the given operating mode SN Smoke Number (see definition)
F, Rated output (see definition) IT,, Reference pressure ratio (see definition)
ANNEX 16 - VOLUME I1
PART 11. VENTED FUEL
CHAPTER 1. ADMINISTRATION
1.1 The provision of this Part shall apply to all turbine
engine powered aircraft intended for operation in international
air navigation manufactured after 18 February 1982.
1.2 Certification related to the prevention of intentional
fuel venting shall be granted by the certificating authority on
the basis of satisfactory evidence that either the aircraft or the
aircraft engines comply with requirements of Chapter 2.
Note.- The document attesting certiJication relating to
fuel venting may take the fonn of a separate fuel venting
certiJicate or a suitable statement contained in another
docwnent approved by the certgcating authority.
1.3 Contracting States shall recognize as valid a
certification relating to fuel venting granted by the
certificating authority of another Contracting State provided
the requirements under which such certification was granted
are not less stringent than the provision of Volume 11: of this
Annex.
ANNEX 16 - VOLUME 11
CHAPTER 2. PREVENTION OF
INTENTIONAL FUEL VENTING
Aircraft shall be so designed and constructed as to prevent
the intentional discharge into the atmosphere of liquid fuel
from the fuel nozzle manifolds resulting from the process of
engine shutdown following normal flight or ground
operations.
ANNEX 16 - VOLUME I1
PART 111. EMISSIONS CERTIFICATION
CHAPTER 1. ADMINISTRATION
1.1 The provision of 1.2 to 1.4 shall apply to all
engines included in the classifications defined for emission
certification purposes in Chapters 2 and 3 where such engines
are fitted to aircraft engaged in international air navigation.
1.2 Emissions certification shall be granted by the
certificating authority on the basis of satisfactory evidence
that the engine complies with requirements which are at least
equ al to the stringency of the provisions of Volume II of his
Annex. Compliance with the emissions levels of Chapters 2
and 3 shall be demonstrated using the procedure described in
Appendix 6.
Note.- The doccunent attesting emissions certification
may take the fonn of a separate emissions certgcate or a
suitable statement contained in another document approved
by the certificating authority.
1.3 The document attesting emissions certification for
each individual engine shall include at least the following
information which is applicable to the engine type:
a) name of certificating authority;
b) manufacturer's type and model designation;
c) statement of any additional modifications incorporated
for the purpose of compliance with the applicable
emissions certification requirements;
d) rated output;
e) reference pressure ratio;
f) a statement indicating compliance with Smoke
Number requirements;
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