749 

Federal Aviation Administration, DOT 

§ 34.6 

that are not defined in that part but 
that are used in this FAR have the 
meaning given them in the Clean Air 
Act, as amended by Public Law 91–604. 

(h) All interpretations of 40 CFR part 

87 that are rendered by the EPA also 
apply to this FAR. 

(i) If the EPA, under 40 CFR 87.3(a), 

approves or accepts any testing and 
sampling procedures or methods, ana-
lytical techniques, or related equip-
ment not identical to those specified in 
that part, this FAR requires an appli-
cant to show that such alternate, 
equivalent, or otherwise nonidentical 
procedures have been complied with, 
and that such alternate equipment was 
used to show compliance, unless the 
applicant elects to comply with those 
procedures, methods, techniques, and 
equipment specified in 40 CFR part 87. 

(j) If the EPA, under 40 CFR 87.5, pre-

scribes special test procedures for any 
aircraft or aircraft engine that is not 
susceptible to satisfactory testing by 
the procedures in 40 CFR part 87, the 
applicant must show the Administrator 
that those special test procedures have 
been complied with. 

(k) Wherever 40 CFR part 87 requires 

agreement, acceptance, or approval by 
the Administrator of the EPA, this 
FAR requires a showing that such 
agreement or approval has been ob-
tained. 

(l) Pursuant to 42 U.S.C. 7573, no 

state or political subdivision thereof 
may adopt or attempt to enforce any 
standard respecting emissions of any 
air pollutant from any aircraft or en-
gine thereof unless that standard is 
identical to a standard made applicable 
to the aircraft by the terms of this 
FAR. 

(m) If EPA, by regulation or exemp-

tion, relaxes a provision of 40 CFR part 
87 that is implemented in this FAR, no 
state or political subdivision thereof 
may adopt or attempt to enforce the 
terms of this FAR that are superseded 
by the relaxed requirement. 

(n) If any provision of this FAR is 

rendered inapplicable to a foreign air-
craft as provided in 40 CFR 87.3(c) 
(international agreements), and 
§ 34.3(d) of this FAR, that provision 
may not be adopted or enforced against 
that foreign aircraft by a state or po-
litical subdivision thereof. 

(o) For exhaust emissions require-

ments of this FAR that apply begin-
ning February 1, 1974, January 1, 1976, 
January 1, 1978, January 1, 1984, and 
August 9, 1985, continued compliance 
with those requirements is shown for 
engines for which the type design has 
been shown to meet those require-
ments, if the engine is maintained in 
accordance with applicable mainte-
nance requirements for 14 CFR chapter 
I. All methods of demonstrating com-
pliance and all model designations pre-
viously found acceptable to the Admin-
istrator shall be deemed to continue to 
be an acceptable demonstration of 
compliance with the specific standards 
for which they were approved. 

(p) Each applicant must allow the 

Administrator to make, or witness, 
any test necessary to determine com-
pliance with the applicable provisions 
of this FAR. 

[Doc. No. 25613, 55 FR 32861, Aug. 10, 1990; 55 
FR 37287, Sept. 10, 1990; Amdt. 34–5, 77 FR 
76850, Dec. 31, 2012] 

§ 34.4

[Reserved] 

§ 34.5

Special test procedures. 

The Administrator or the Adminis-

trator of the EPA may, upon written 
application by a manufacturer or oper-
ator of aircraft or aircraft engines, ap-
prove test procedures for any aircraft 
or aircraft engine that is not suscep-
tible to satisfactory testing by the pro-
cedures set forth herein. Prior to tak-
ing action on any such application, the 
Administrator or the Administrator of 
the EPA shall consult with the other. 

§ 34.6

Aircraft safety. 

(a) The provisions of this part will be 

revised if at any time the Adminis-
trator determines that an emission 
standard cannot be met within the 
specified time without creating a safe-
ty hazard. 

(b) Consistent with 40 CFR 87.6, if the 

FAA Administrator determines that 
any emission control regulation in this 
part cannot be safely applied to an air-
craft, that provision may not be adopt-
ed or enforced against that aircraft by 
any state or political subdivision 
thereof. 

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