spaschal on DSK3GDR082PROD with CFR

Section 36.9

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

(i) The airplane may not be a Stage 1
airplane after the change in type design; and
(ii) During the flyover and lateral
noise tests conducted before the change
in type design, the quietest airworthiness approved configuration available
for the highest approved takeoff weight
must be used.
(e) Stage 3 airplanes. If an airplane is
a Stage 3 airplane prior to the change
in type design, the following apply, in
addition to the provisions of paragraph
(b) of this section:
(1) If compliance with Stage 3 noise
levels is not required before the change
in type design, the airplane must - 
(i) Be a Stage 2 airplane after the
change in type design and compliance
must be shown under the provisions of
paragraph (d)(1) or (d)(2) of this section, as appropriate; or
(ii) Remain a Stage 3 airplane after
the change in type design. Compliance
must be shown under the provisions of
paragraph (e)(2) of this section.
(2) If compliance with Stage 3 noise
levels is required before the change in
type design, the airplane must be a
Stage 3 airplane after the change in
type design.
(3) Applications on or after [August
14, 1989.] The airplane must remain a
Stage 3 airplane after the change in
type design.
(4) If an airplane is a Stage 3 airplane
prior to a change in type design, and
becomes a Stage 4 after the change in
type design, the airplane must remain
a Stage 4 airplane.
(5) If an airplane is a Stage 3 airplane
prior to a change in type design, and
becomes a Stage 5 airplane after the
change in type design, the airplane
must remain a Stage 5 airplane.
(f) Stage 4 airplanes. (1) If an airplane
is a Stage 4 airplane prior to a change
in type design, the airplane must remain a Stage 4 airplane after the
change in type design.
(2) If an airplane is a Stage 4 airplane
prior to a change in type design, and
becomes a Stage 5 airplane after the
change in type design, the airplane
must remain a Stage 5 airplane.
(g) Stage 5 airplanes. If an airplane is
a Stage 5 airplane prior to a change in
type design, the airplane must remain

a Stage 5 airplane after the change in
type design.
[Amdt. 36-7, 42 FR 12371, Mar. 3, 1977; Amdt.
36-8, 43 FR 8730, Mar. 2, 1978; Amdt. 36-10, 43
FR 28420, June 29, 1978; Amdt. 36-12, 46 FR
33464, June 29, 1981; Amdt. 36-15, 53 FR 16366,
May 6, 1988; 53 FR 18950, May 25, 1988; Amdt.
36-17, 54 FR 21042, May 15, 1989; Amdt. 36-54,
67 FR 45212, July 8, 2002; Amdt. 36-26, 70 FR
38749, July 5, 2005; FAA Doc. No. FAA-2015-
3782, Amdt. No. 36-31, 82 FR 46130, Oct. 4,
2017]

Section 36.9 Acoustical change: Propellerdriven small airplanes and propeller-driven commuter category
airplanes.
For propeller-driven small airplanes
in the primary, normal, utility, acrobatic, transport, and restricted categories and for propeller-driven, commuter category airplanes for which an
acoustical change approval is applied
for under Section 21.93(b) of this chapter after
January 1, 1975, the following apply:
(a) If the airplane was type certificated under this part prior to a change
in type design, it may not subsequently
exceed the noise limits specified in
Section 36.501 of this part.
(b) If the airplane was not type certificated under this part prior to a
change in type design, it may not exceed the higher of the two following
values:
(1) The noise limit specified in Section 36.501
of this part, or
(2) The noise level created prior to
the change in type design, measured
and corrected as prescribed in Section 36.501 of
this part.
[Amdt. 36-16, 53 FR 47400, Nov. 22, 1988; 53 FR
50157, Dec. 13, 1988; Amdt. 36-19, 57 FR 41369,
Sept. 9, 1992]

Section 36.11 Acoustical change: Helicopters.
This section applies to all helicopters
in the primary, normal, transport, and
restricted categories for which an
acoustical change approval is applied
for under Section 21.93(b) of this chapter on or
after March 6, 1986. Compliance with
the requirements of this section must
be demonstrated under appendix H of
this part, or, for helicopters having a
maximum certificated takeoff weight
of not more than 7,000 pounds, compliance with this section may be demonstrated under appendix J of this
part.

770

VerDate Sep<11>2014

12:50 Apr 30, 2019

Jkt 247046

PO 00000

Frm 00780

Fmt 8010

Sfmt 8010

Y:\SGML\247046.XXX

247046