Table 4-34: Federal Exhaust Emissions Standards for Newly Manufactured and
In-Use Aircraft Enginesa,b
Excel | CSV
Turboprop |
Smoke |
|
|
|
|
g187(rO)-0.168 |
g187(rO)-0.168 |
g187(rO)-0.168 |
Class T3 turbojet |
CO (g/kN)d |
|
|
|
|
|
118 |
118 |
Class T3 turbojet |
HC (g/kN)d |
|
|
|
|
19.6 |
19.6 |
19.6 |
Class T3 turbojet |
NOx (g/kN)d |
|
|
|
|
|
e40 + 2(rPR) |
f32 + 1.6(rPR) |
Class T3 turbojet |
Smoke |
|
|
25 |
25 |
h83.6(rO)-0.274 |
h83.6(rO)-0.274 |
h83.6(rO)-0.274 |
Class T8 turbojet |
CO (g/kN)d |
|
|
|
|
|
118 |
118 |
Class T8 turbojet |
HC (g/kN)d |
|
|
|
|
19.6 |
19.6 |
19.6 |
Class T8 turbojet |
NOx (g/kN)d |
|
|
|
|
|
e40 + 2(rPR) |
f32 + 1.6(rPR) |
Class T8 turbojet |
Smoke |
30 |
30 |
30 |
30 |
h83.6(rO)-0.274 |
h83.6(rO)-0.274 |
h83.6(rO)-0.274 |
Turbofan and turbojet engines other than Classes T3, T8,
and TSS |
CO (g/kN)d |
|
|
|
|
|
118 |
118 |
Turbofan and turbojet engines other than Classes T3, T8,
and TSS |
HC (g/kN)d |
|
|
|
|
19.6 |
19.6 |
19.6 |
Turbofan and turbojet engines other than Classes T3, T8,
and TSS |
NOx (g/kN)d |
|
|
|
|
|
e40 + 2(rPR) |
f32 + 1.6(rPR) |
Turbofan and turbojet engines other than Classes T3, T8,
and TSS |
Smoke |
|
i83.6(rO)-0.274 |
i83.6(rO)-0.274 |
j83.6(rO)-0.274 |
h83.6(rO)-0.274 |
h83.6(rO)-0.274 |
h83.6(rO)-0.274 |
TSS engines (supersonic aircraft engines) |
HC (g/kN) |
|
|
|
|
140(0.92)rPR |
140(0.92)rPR |
140(0.92)rPR |
TSS engines (supersonic aircraft engines) |
Smoke |
|
|
|
|
h83.6(rO)-0.274 |
h83.6(rO)-0.274 |
h83.6(rO)-0.274 |
KEY: CO = carbon monoxide; g = gram; g/kN = grams of pollutant per kilonewtons
of thrust; HC = hydrocarbon, kN = kilonewtons; kW = kilowatt; NOx = nitrogen
oxides; rO = rated output, which is the maximum power or thrust available for
takeoff; rPR = rated pressure ratio.
a Federal standards apply to all planes operating in the United
States, regardless of where they were manufactured. This table primarily displays
exhaust emissions standards for newly manufactured aircraft engines. Only two
standards (smoke standards) have been set for in-use aircraft engines (see footnotes
i and k). Therefore, unless otherwised noted, emissions in this table apply
to new aircraft engines only.
b HC, CO, and NOx are measured using the International Civil Aviation
Organization (ICAO) Gaseous Emissions Test Procedure. Smoke is measured using
the ICAO Smoke Emission Test Procedure. There is no useful life or warranty
period for purposes of compliance with emissions standards.
c Examples of commercial aircraft that use each engine type include
the following:
Class T3 turbojet–Boeing 707-320s (Class T3 engines are currently out of production,
though some are still in use).
Class T8 turbojet–Boeing 727s and 737-200s, and McDonnell-Douglas MD-80s and
DC-9s.
Turbofans and turbojets other than T3, T8, and TSS–Boeing 747-400s, 757s, 767-200s
and 777s, and McDonnell-Douglas MD-11s; Canadair Regional Jets.
Turboprops–Used mostly in regional airliners such as ATR 72, Dornier 328, and
Saab SF 340.
TSS–British Aircraft Corp./Aerospatiale Concorde (the only supersonic aircraft
currently used in commercial civil aviation).
d Applies to engines with rO>26.7 kN.
e Effective as of July 7, 1997. This standard applies only to those
engines of a type or model for which the date of manufacture of the first individual
production model was on or before Dec. 31, 1995 and for which the date of manufacture
of the individual engine was on or before Dec. 31, 1999.
f Effective as of July 7, 1997. This standard also applies to engines
of a type or model for which the date of manufacture of the first individual
production model was after Dec. 31, 1995 and for which the date of manufacture
of the individual engine was after Dec. 31, 1999.
g Engines with rO>=1,000 kW.
h Engines manufactured on or after Jan. 1, 1984 and with rO>=26.7
kN. Smoke number may not exceed 50.
i Engines with rated output rO>=129 kN. This is also the in-use
standard for all such aircraft engines.
j Engines with rO<26.7 kN. Smoke number may not exceed 50.
k Class T8 turbojet engines shall not exceed a smoke number of 30
beginning Feb. 1, 1974.
SOURCE:
40 CFR 87, Subparts A-D (July 1, 2000), and U.S. Environmental Protection Agency,
Office of Air and Radiation, personal communication, Aug. 28, 2001.
|