Section 34.30

14 CFR Ch. I (1-1-19 Edition)

Section 45.13 of this chapter. No exemptions to
the requirements of paragraph (a)(2) of
this section will be granted after December 31, 2016.

(4) For Class TSS Engines manufactured on and after July 18, 2012:

GASEOUS EMISSION STANDARDS FOR SUPERSONIC ENGINES
Class

Rated output
rO 1 (kN)

NOX
(g/kN)

TSS ..........................................

All ............................................

36 + 2.42 (rPR) .....................

1 rO

CO
(g/kN)
4,550 (rPR) Section1.03

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 manufactured after December 31, 2013 (Tier
8):

TIER 8 OXIDES OF NITROGEN EMISSION STANDARDS FOR SUBSONIC ENGINES
Class

Rated pressure ratio - 
rPR

Rated output rO
(kN)

NOX
(g/kN)

TF, T3, T8 .....................

rPR - 30 .......................

26.7 < rO - 89.0 ...........

40.052 + 1.5681 (rPR) Section 0.3615 (rO) Section
(0.0018 (rPR) (rO)).

rO > 89.0 ......................

7.88 + 1.4080 (rPR).

26.7 < rO - 89.0 ...........

41.9435 + 1.505 (rPR) Section 0.5823 (rO) +
(0.005562 (rPR) (rO)).

rO > 89.0 ......................

Section9.88 + 2.0 (rPR).

rO - 26.7 ......................

32 + 1.6 (rPR).

30 < rPR < 104.7 .........

rPR - 104.7 ..................

(c) Engines (including engines that
are determined to be derivative engines
for the purposes of emission certification) type certificated with characteristic levels at or below the NOX
standards of Section 34.21(d)(1)(vi) of this part
(as applicable based on rated output
and rated pressure ratio) and introduced before July 18, 2012, may be produced through December 31, 2012, without meeting the NOX standard of paragraph (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]

spaschal on DSK3GDR082PROD with CFR

Subpart D - Exhaust Emissions (Inuse Aircraft Gas Turbine Engines)
Section 34.30 Applicability.
The provisions of this subpart are applicable to all in-use aircraft gas turbine engines certificated for operation
within the United States of the classes
specified, beginning on the dates specified in Section 34.31.

Section 34.31 Standards
sions.

for

exhaust

(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, beginning January l, 1976, shall not exceed
SN = 83.6(rO) Section0.274 (rO is in kN).
(c) The standards set forth in paragraphs (a) and (b) of this section refer
to exhaust smoke emission emitted
during operation of the engine as specified in the applicable sections of subpart G of this part, and measured and
calculated in accordance with the procedures set forth in subpart G.
[Doc. No. FAA-2012-1333, 77 FR 76852, Dec. 31,
2012]

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