754
14 CFR Ch. I (1–1–24 Edition)
§ 34.30
§ 45.13 of this chapter. No exemptions to
the requirements of paragraph (a)(2) of
this section will be granted after De-
cember 31, 2016.
(4) For Class TSS Engines manufac-
tured on and after July 18, 2012:
G
ASEOUS
E
MISSION
S
TANDARDS FOR
S
UPERSONIC
E
NGINES
Class
Rated output
rO
1
(kN)
NO
X
(g/kN)
CO
(g/kN)
TSS ..........................................
All ............................................
36 + 2.42 (rPR) .....................
4,550 (rPR)
¥
1.03
1
rO is the rated output with afterburning applied.
(b) Gaseous exhaust emissions from
each new aircraft gas turbine engine
shall not exceed:
(1) For Classes TF, T3 and T8 engines
of a type or model of which the first in-
dividual production model was manu-
factured after December 31, 2013 (Tier
8):
T
IER
8 O
XIDES OF
N
ITROGEN
E
MISSION
S
TANDARDS FOR
S
UBSONIC
E
NGINES
Class
Rated pressure ratio—
rPR
Rated output rO
(kN)
NO
X
(g/kN)
TF, T3, T8 .....................
rPR
≤
30 .......................
26.7 < rO
≤
89.0 ...........
40.052 + 1.5681 (rPR)
¥
0.3615 (rO)
¥
(0.0018 (rPR) (rO)).
rO > 89.0 ......................
7.88 + 1.4080 (rPR).
30 < rPR < 104.7 .........
26.7 < rO
≤
89.0 ...........
41.9435 + 1.505 (rPR)
¥
0.5823 (rO) +
(0.005562 (rPR) (rO)).
rO > 89.0 ......................
¥
9.88 + 2.0 (rPR).
rPR
≥
104.7 ..................
rO
≥
26.7 ......................
32 + 1.6 (rPR).
(c) Engines (including engines that
are determined to be derivative engines
for the purposes of emission certifi-
cation) type certificated with char-
acteristic levels at or below the NO
X
standards of § 34.21(d)(1)(vi) of this part
(as applicable based on rated output
and rated pressure ratio) and intro-
duced before July 18, 2012, may be pro-
duced through December 31, 2012, with-
out meeting the NO
X
standard of para-
graph (a)(2) of this section.
[Doc. No. 34–5, 77 FR 76851, Dec. 31, 2012, as
amended by Amdt. 34–5A, 78 FR 63017, Oct. 23,
2013; 78 FR 65554, Nov. 1, 2013]
Subpart D—Exhaust Emissions (In-
use Aircraft Gas Turbine Engines)
§ 34.30
Applicability.
The provisions of this subpart are ap-
plicable to all in-use aircraft gas tur-
bine engines certificated for operation
within the United States of the classes
specified, beginning on the dates speci-
fied in § 34.31.
§ 34.31
Standards for exhaust emis-
sions.
(a) Exhaust emissions of smoke from
each in-use aircraft gas turbine engine
of Class T8, beginning February 1, 1974,
shall not exceed a smoke number (SN)
of 30.
(b) Exhaust emissions of smoke from
each in-use aircraft gas turbine engine
of Class TF and of rated output of 129
kN (29,000 lb) thrust or greater, begin-
ning January l, 1976, shall not exceed
SN = 83.6(rO)
¥
0.274
(rO is in kN).
(c) The standards set forth in para-
graphs (a) and (b) of this section refer
to exhaust smoke emission emitted
during operation of the engine as speci-
fied in the applicable sections of sub-
part G of this part, and measured and
calculated in accordance with the pro-
cedures set forth in subpart G.
[Doc. No. FAA–2012–1333, 77 FR 76852, Dec. 31,
2012]
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