764 

14 CFR Ch. I (1–1–24 Edition) 

§ 35.42 

demonstrate that the propeller is capa-
ble of further operation without main-
tenance action at the maximum pro-
peller overtorque condition. This may 
be accomplished by: 

(1) Performance of 20 runs, each of 30 

seconds duration, at the maximum pro-
peller overtorque condition; or 

(2) Analysis based on test or service 

experience. 

[Amdt. 35–8, 73 FR 63349, Oct. 24, 2008] 

§ 35.42

Components of the propeller 

control system. 

The applicant must demonstrate by 

tests, analysis based on tests, or serv-
ice experience on similar components, 
that each propeller blade pitch control 
system component, including gov-
ernors, pitch change assemblies, pitch 
locks, mechanical stops, and feathering 
system components, can withstand cy-
clic operation that simulates the nor-
mal load and pitch change travel to 
which the component would be sub-
jected during the initially declared 
overhaul period or during a minimum 
of 1,000 hours of typical operation in 
service. 

[Amdt. 35–8, 73 FR 63349, Oct. 24, 2008] 

§ 35.43

Propeller hydraulic compo-

nents. 

Applicants must show by test, vali-

dated analysis, or both, that propeller 
components that contain hydraulic 
pressure and whose structural failure 
or leakage from a structural failure 
could cause a hazardous propeller ef-
fect demonstrate structural integrity 
by: 

(a) A proof pressure test to 1.5 times 

the maximum operating pressure for 
one minute without permanent defor-
mation or leakage that would prevent 
performance of the intended function. 

(b) A burst pressure test to 2.0 times 

the maximum operating pressure for 
one minute without failure. Leakage is 
permitted and seals may be excluded 
from the test. 

[Amdt. 35–8, 73 FR 63349, Oct. 24, 2008] 

§§ 35.45–35.47

[Reserved] 

A

PPENDIX

A 

TO

P

ART

35—I

NSTRUCTIONS

 

FOR

C

ONTINUED

A

IRWORTHINESS

 

A

35.1

GENERAL

 

(a) This appendix specifies requirements 

for the preparation of Instructions for Con-
tinued Airworthiness as required by § 35.4. 

(b) The Instructions for Continued Air-

worthiness for each propeller must include 
the Instructions for Continued Airworthiness 
for all propeller parts. If Instructions for 
Continued Airworthiness are not supplied by 
the propeller part manufacturer for a pro-
peller part, the Instructions for Continued 
Airworthiness for the propeller must include 
the information essential to the continued 
airworthiness of the propeller. 

(c) The applicant must submit to the FAA 

a program to show how changes to the In-
structions for Continued Airworthiness made 
by the applicant or by the manufacturers of 
propeller parts will be distributed. 

A

35.2

FORMAT

 

(a) The Instructions for Continued Air-

worthiness must be in the form of a manual 
or manuals as appropriate for the quantity 
of data to be provided. 

(b) The format of the manual or manuals 

must provide for a practical arrangement. 

A

35.3

CONTENT

 

The contents of the manual must be pre-

pared in the English language. The Instruc-
tions for Continued Airworthiness must con-
tain the following sections and information: 

(a) 

Propeller Maintenance Section. (1) Intro-

duction information that includes an expla-
nation of the propeller’s features and data to 
the extent necessary for maintenance or pre-
ventive maintenance. 

(2) A detailed description of the propeller 

and its systems and installations. 

(3) Basic control and operation information 

describing how the propeller components and 
systems are controlled and how they oper-
ate, including any special procedures that 
apply. 

(4) Instructions for uncrating, acceptance 

checking, lifting, and installing the pro-
peller. 

(5) Instructions for propeller operational 

checks. 

(6) Scheduling information for each part of 

the propeller that provides the recommended 
periods at which it should be cleaned, ad-
justed, and tested, the applicable wear toler-
ances, and the degree of work recommended 
at these periods. However, the applicant may 
refer to an accessory, instrument, or equip-
ment manufacturer as the source of this in-
formation if it shows that the item has an 
exceptionally high degree of complexity re-
quiring specialized maintenance techniques, 
test equipment, or expertise. The rec-
ommended overhaul periods and necessary 

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