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a) for engines of type or model of which the date of
manufacture of the first individual production model
was on or before 31 December 1995 and for which
the date of manufacture of the individual engine was
on or before 31 December 1999.
b) for engines of a type or model of which the date of
manufacture of the first individual production model
was after 31 December 1995 or for which the date of
manufacture of the individual engine was after 31
December 1999.
Note.- The characteristic level of the Smoke Number or
gaseous pollutant emissions is the mean of the values of all
the engines tested, measured and corrected to the reference
standard engine and reference ambient conditions divided by
the coefficient corresponding to the number of engines tested,
as shown in Appendix 6.
2.4 Information required
Regulatory Smoke Number = 83.6 (F,0)-0'274 Note.- The information required is divided into three
or a value of 50, groups: 1) general information to identify the engine
whichever is lower characteristics, the fuel used and the method of data analysis;
2) the data obtained from the engine test(s); and 3) the
results derivedfrom the test data.
2.3 Gaseous emissions
2.3.1 Applicability
2.4.1 General information
The following information shall be provided for each engine
type for which emissions certification is sought:
a) engine identification;
The provisions of 2.3.2 shall apply to engines whose rated
output is greater than 26.7 kN and whose date of manufacture h) rated output (in kilonewtons);
is on or after 1 January 1986 and as further specified for
oxides of nitrogen. C) reference pressure ratio;
d) fuel specification reference;
2.3.2 Regulatory levels e) fuel hydrogentcarbon ratio;
Gaseous emission levels when measured and computed in fj the methods of data acquisition;
accordance with the procedures of Appendix 3 and converted g) the method of making corrections for ambient
to characteristic levels by the procedures of Appendix 6 shall conditions; and
nor exceed the rer-r ulatorv levels determined from the . -
following formulas: g) the method of data analysis.
Annex 16 - Environmental Protection Volume IZ
2.4.2 Test information
The following information shall be provided for each engine
tested for certification purposes at each of the thrust settings
specified in 2.1.4.2. The information shall be provided after
correction to the reference ambient conditions where
applicable:
a) emission rate, i.e. emission index x fuel flow,
(gramslsecond) for each gaseous pollutant;
b) total gross emission of each gaseous pollutant
measured over the LTO cycle (grams);
c) values of DpIFW for each gaseous pollutant
(grarns/kilonewton); and
a) fuel flow (kilogramslsecond);
d) maximum Smoke Number.
b) emission index (grarnsflulograrn) for each gaseous
pollutant; and
C) measured Smoke Number.
2.4.3 Derived information
2.4.3.1 The following derived information shall be
provided for each engine tested for certification purposes:
2.4.3.2 The characteristic Smoke Number and gaseous
pollutant emission levels shall be provided for each engine
type for which emissions certification is sought.
Note.- The characteristic h e 1 of the Smoke Number or
gaseous pollutant emissions is the mean of the values of all
the engines tested, measured and corrected to the reference
standard sngim and reference d i m t conditions, divided by
the coefficient corresponding to the number of engines tested
as shown in Appendix 6.
CHAPTER 3. TURBO-JET AND TURBOFAN ENGINES INTENDED FOR
PROPULSION AT SUPERSONIC SPEEDS
3.1 General 3.1.5.2 Thrust settings
The engine shall be tested at sufficient power settings to
3.1.1 Applicability define the gaseous and smokeemissions of the engine so that
mass emission rates and Smoke Numbers corrected to the
The provisions of this chapter shall apply to all turbo-jet and reference ambient conditions can be determined at the
turbofan engines intended for propulsion at supersonic speeds following specific percentages of rated output as agreed by
whose date of manufacture is on or after 18 February 1982, the certificating authodty.
3.1.2 Emissions involved
Operating mode Thrust setting
Take-off 100 per cent F*,,
The following emissions shall be controlled for certification Climb
of aircraft engines: Descent
65 per cent F*,,
15 per cent
Smoke
Gaseous emissions
Unburned hydrocarbons (HC);
Carbon monoxide (CO); and
Oxides of nitrogen (NO,).
Approach 34 per cent F*,,
Taxilground idle 5.8 per cent F,,
3.1.5.3 Reference emissions landing and
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