757
Federal Aviation Administration, DOT
§ 35.3
§§ 34.61–34.71
[Reserved]
PART 35—AIRWORTHINESS
STANDARDS: PROPELLERS
Subpart A—General
Sec.
35.1
Applicability.
35.2
Propeller configuration.
35.3
Instructions for propeller installation
and operation.
35.4
Instructions for Continued Airworthi-
ness.
35.5
Propeller ratings and operating limita-
tions.
35.7
Features and characteristics.
Subpart B—Design and Construction
35.11
[Reserved]
35.13
[Reserved]
35.15
Safety analysis.
35.16
Propeller critical parts.
35.17
Materials and manufacturing methods.
35.19
Durability.
35.21
Variable and reversible pitch propel-
lers.
35.22
Feathering propellers.
35.23
Propeller control system.
35.24
Strength.
Subpart C—Tests and Inspections
35.31
[Reserved]
35.33
General.
35.34
Inspections, adjustments and repairs.
35.35
Centrifugal load tests.
35.36
Bird impact.
35.37
Fatigue limits and evaluation.
35.38
Lightning strike.
35.39
Endurance test.
35.40
Functional test.
35.41
Overspeed and overtorque.
35.42
Components of the propeller control
system.
35.43
Propeller hydraulic components.
35.45–35.47
[Reserved]
A
PPENDIX
A
TO
P
ART
35—I
NSTRUCTIONS FOR
C
ONTINUED
A
IRWORTHINESS
A
UTHORITY
: 49 U.S.C. 106(f), 106(g), 40113,
44701–44702, 44704.
S
OURCE
: Docket No. 2095, 29 FR 7458, June
10, 1964, unless otherwise noted.
Subpart A—General
§ 35.1
Applicability.
(a) This part prescribes airworthiness
standards for the issue of type certifi-
cates and changes to those certificates,
for propellers.
(b) Each person who applies under
part 21 for such a certificate or change
must show compliance with the appli-
cable requirements of this part.
(c) An applicant is eligible for a pro-
peller type certificate and changes to
those certificates after demonstrating
compliance with subparts A, B, and C
of this part. However, the propeller
may not be installed on an airplane un-
less the applicant has shown compli-
ance with either § 23.2400(c) or § 25.907 of
this chapter, as applicable, or compli-
ance is not required for installation on
that airplane.
(d) For the purposes of this part, the
propeller consists of those components
listed in the propeller type design, and
the propeller system consists of the
propeller and all the components nec-
essary for its functioning, but not nec-
essarily included in the propeller type
design.
[Amdt. 35–3, 41 FR 55475, Dec. 20, 1976, as
amended by Amdt. 35–8, 73 FR 63346, Oct. 24,
2008; Doc. FAA–2015–1621, Amdt. 35–10, 81 FR
96700, Dec. 30, 2016]
§ 35.2
Propeller configuration.
The applicant must provide a list of
all the components, including ref-
erences to the relevant drawings and
software design data, that define the
type design of the propeller to be ap-
proved under § 21.31 of this chapter.
[Amdt. 35–8, 73 FR 63346, Oct. 24, 2008]
§ 35.3
Instructions for propeller instal-
lation and operation.
The applicant must provide instruc-
tions that are approved by the Admin-
istrator. Those approved instructions
must contain:
(a) Instructions for installing the
propeller, which:
(1) Include a description of the oper-
ational modes of the propeller control
system and functional interface of the
control system with the airplane and
engine systems;
(2) Specify the physical and func-
tional interfaces with the airplane, air-
plane equipment and engine;
(3) Define the limiting conditions on
the interfaces from paragraph (a)(2) of
this section;
(4) List the limitations established
under § 35.5;
(5) Define the hydraulic fluids ap-
proved for use with the propeller, in-
cluding grade and specification, related
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14 CFR Ch. I (1–1–24 Edition)
§ 35.4
operating pressure, and filtration lev-
els; and
(6) State the assumptions made to
comply with the requirements of this
part.
(b) Instructions for operating the
propeller which must specify all proce-
dures necessary for operating the pro-
peller within the limitations of the
propeller type design.
[Amdt. 35–8, 73 FR 63346, Oct. 24, 2008]
§ 35.4
Instructions for Continued Air-
worthiness.
The applicant must prepare Instruc-
tions for Continued Airworthiness in
accordance with appendix A to this
part that are acceptable to the Admin-
istrator. The instructions may be in-
complete at type certification if a pro-
gram exists to ensure their completion
prior to delivery of the first aircraft
with the propeller installed, or upon
issuance of a standard certificate of
airworthiness for an aircraft with the
propeller installed, whichever occurs
later.
[Amdt. 35–5, 45 FR 60181, Sept. 11, 1980]
§ 35.5
Propeller ratings and operating
limitations.
(a) Propeller ratings and operating
limitations must:
(1) Be established by the applicant
and approved by the Administrator.
(2) Be included directly or by ref-
erence in the propeller type certificate
data sheet, as specified in § 21.41 of this
chapter.
(3) Be based on the operating condi-
tions demonstrated during the tests re-
quired by this part as well as any other
information the Administrator re-
quires as necessary for the safe oper-
ation of the propeller.
(b) Propeller ratings and operating
limitations must be established for the
following, as applicable:
(1) Power and rotational speed:
(i) For takeoff.
(ii) For maximum continuous.
(iii) If requested by the applicant,
other ratings may also be established.
(2) Overspeed and overtorque limits.
[Amdt. 35–8, 73 FR 63346, Oct. 24, 2008]
§ 35.7
Features and characteristics.
(a) The propeller may not have fea-
tures or characteristics, revealed by
any test or analysis or known to the
applicant, that make it unsafe for the
uses for which certification is re-
quested.
(b) If a failure occurs during a certifi-
cation test, the applicant must deter-
mine the cause and assess the effect on
the airworthiness of the propeller. The
applicant must make changes to the
design and conduct additional tests
that the Administrator finds necessary
to establish the airworthiness of the
propeller.
[Amdt. 35–8, 73 FR 63346, Oct. 24, 2008]
Subpart B—Design and
Construction
§ 35.11
[Reserved]
§ 35.13
[Reserved]
§ 35.15
Safety analysis.
(a)(1) The applicant must analyze the
propeller system to assess the likely
consequences of all failures that can
reasonably be expected to occur. This
analysis will take into account, if ap-
plicable:
(i) The propeller system in a typical
installation. When the analysis de-
pends on representative components,
assumed interfaces, or assumed in-
stalled conditions, the assumptions
must be stated in the analysis.
(ii) Consequential secondary failures
and dormant failures.
(iii) Multiple failures referred to in
paragraph (d) of this section, or that
result in the hazardous propeller ef-
fects defined in paragraph (g)(1) of this
section.
(2) The applicant must summarize
those failures that could result in
major propeller effects or hazardous
propeller effects defined in paragraph
(g) of this section, and estimate the
probability of occurrence of those ef-
fects.
(3) The applicant must show that
hazardous propeller effects are not pre-
dicted to occur at a rate in excess of
that defined as extremely remote
(probability of 10
¥
7
or less per propeller
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