Code of Federal Regulations - Title 14

919

Federal Aviation Administration, DOT

Pt. 36, App. A

weight must be furnished, as an oper-
ating limitation, in the operating limi-
tations section of an approved Airplane
Flight Manual, in approved manual
material, or on an approved placard.

(f) For primary, normal, transport,

and restricted category helicopters, if
the weight used in meeting the takeoff,
flyover, or approach noise require-
ments of appendix H of this part, or the
weight used in meeting the flyover
noise requirement of appendix J of this
part, is less than the certificated max-
imum takeoff weight established under
either § 27.25(a) or § 29.25(a) of this chap-
ter, that lesser weight must be fur-
nished as an operating limitation in
the operating limitations section of the
Rotorcraft Flight Manual, in FAA-ap-
proved manual material, or on an FAA-
approved placard.

(g) Except as provided in paragraphs

(d), (e), and (f) of this section, no oper-
ating limitations are furnished under
this part.

[Doc. No. 13243, 40 FR 1035, Jan. 6, 1975]

DITORIAL

OTE

: For F

EDERAL

EGISTER

ci-

tations affecting § 36.1581, see the List of CFR
Sections Affected, which appears in the
Finding Aids section of the printed volume
and at

www.fdsys.gov.

§ 36.1583

Noncomplying agricultural

and fire fighting airplanes.

(a) This section applies to propeller-

driven, small airplanes that—

(1) Are designed for ‘‘agricultural air-

craft operations’’ (as defined in § 137.3
of this chapter, effective on January 1,
1966) or for dispensing fire fighting ma-
terials; and

(2) Have not been shown to comply

with the noise levels prescribed under
appendix F of this part—

(i) For which application is made for

the original issue of a standard air-
worthiness certificate and that do not
have any flight time before January 1,
1980; or

(ii) For which application is made for

an acoustical change approval, for air-
planes which have a standard air-
worthiness certificate after the change
in the type design, and that do not
have any flight time in the changed
configuration before January 1, 1980.

(b) For airplanes covered by this sec-

tion an operating limitation reading as

follows must be furnished in the man-
ner prescribed in § 36.1581:

Noise abatement: This airplane has not

been shown to comply with the noise limits
in FAR Part 36 and must be operated in ac-
cordance with the noise operating limitation
prescribed under FAR § 91.815.

[Amdt. 36–11, 45 FR 67066, Oct. 9, 1980. Redes-
ignated by Amdt. 36–14, 53 FR 3540, Feb. 5,
1988; Amdt. 36–18, 54 FR 34330, Aug. 18, 1989]

PPENDIX

ART

36—A

IRCRAFT

OISE

EASUREMENT AND

VALUA

TION

NDER

§ 36.101

Sec.

A36.1

Introduction.

A36.2

Noise Certification Test and Measurement

Conditions.

A36.3

Measurement of Airplane Noise Received

on the Ground.

A36.4

Calculations of Effective Perceived Noise

Level From Measured Data.

A36.5

Reporting of Data to the FAA.

A36.6

Nomenclature: Symbols and Units.

A36.7

Sound Attenuation in Air.

A36.8 [Reserved]
A36.9

Adjustment of Airplane Flight Test Re-

sults.

Section A36.1 Introduction

A36.1.1 This appendix prescribes the condi-

tions under which airplane noise certifi-
cation tests must be conducted and states
the measurement procedures that must be
used to measure airplane noise. The proce-
dures that must be used to determine the
noise evaluation quantity designated as ef-
fective perceived noise level, EPNL, under
§§ 36.101 and 36.803 are also stated.

A36.1.2 The instructions and procedures

given are intended to ensure uniformity dur-
ing compliance tests and to permit compari-
son between tests of various types of air-
planes conducted in various geographical lo-
cations.

A36.1.3 A complete list of symbols and

units, the mathematical formulation of per-
ceived noisiness, a procedure for determining
atmospheric attenuation of sound, and de-
tailed procedures for correcting noise levels
from non-reference to reference conditions
are included in this appendix.

A36.1.4 For Stage 4 airplanes, an acceptable

alternate for noise measurement and evalua-
tion is Appendix 2 to the International Civil
Aviation Organization (ICAO) Annex 16, En-
vironmental Protection, Volume I, Aircraft
Noise, Third Edition, July 1993, Amendment
7, effective March 21, 2002. [Incorporated by
reference, see § 36.6].

Section A36.2 Noise Certification Test and

Measurement Conditions

A36.2.1

General.

VerDate Mar<15>2010

10:12 Mar 18, 2014

Jkt 232046

PO 00000

Frm 00929

Fmt 8010

Sfmt 8002

Y:\SGML\232046.XXX

232046

pmangrum on DSK3VPTVN1PROD with CFR