884 

14 CFR Ch. I (1–1–14 Edition) 

Pt. 33, App. A 

or addressed within the Instructions 
for Continued Airworthiness. 

(4) Not show wear or distress to the 

extent that could result in an IFSD, 
loss of thrust control, or other power 
loss within a period of operation before 
the component, assembly, or system 
would likely have been inspected or 
functionally tested for integrity while 
in service. Such wear or distress must 
have corrective action implemented 
through a design change, a change to 
maintenance instructions, or oper-
ational procedures before ETOPS eligi-
bility is granted. The type and fre-
quency of wear and distress that occurs 
during the engine test must be con-
sistent with the type and frequency of 
wear and distress that would be ex-
pected to occur on ETOPS eligible en-
gines. 

(f) An alternative mission cycle en-

durance test that provides an equiva-
lent demonstration of the unbalance 
and vibration specified in paragraph (c) 
of this section may be used when ap-
proved by the FAA. 

(g) For an applicant using the simu-

lated ETOPS mission cyclic endurance 
test to comply with § 33.90, the test 
may be interrupted so that the engine 
may be inspected by an on-wing or 
other method, using criteria acceptable 
to the FAA, after completion of the 
test cycles required to comply with 
§ 33.90(a). Following the inspection, the 
ETOPS test must be resumed to com-
plete the requirements of this section. 

A

PPENDIX

A 

TO

P

ART

33—I

NSTRUCTIONS

 

FOR

C

ONTINUED

A

IRWORTHINESS

 

A

33.1

GENERAL

 

(a) This appendix specifies requirements 

for the preparation of Instructions for Con-
tinued Airworthiness as required by § 33.4. 

(b) The Instructions for Continued Air-

worthiness for each engine must include the 
Instructions for Continued Airworthiness for 
all engine parts. If Instructions for Contin-
ued Airworthiness are not supplied by the 
engine part manufacturer for an engine part, 
the Instructions for Continued Airworthiness 
for the engine must include the information 
essential to the continued airworthiness of 
the engine. 

(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 
engine parts will be distributed. 

A

33.2

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

33.3

CONTENT

 

The contents of the manual or manuals 

must be prepared in the English language. 
The Instructions for Continued Airworthi-
ness must contain the following manuals or 
sections, as appropriate, and information: 

(a) 

Engine Maintenance Manual or Section. 

(1) Introduction information that includes an 
explanation of the engine’s features and data 
to the extent necessary for maintenance or 
preventive maintenance. 

(2) A detailed description of the engine and 

its components, systems, and installations. 

(3) Installation instructions, including 

proper procedures for uncrating, 
deinhibiting, acceptance checking, lifting, 
and attaching accessories, with any nec-
essary checks. 

(4) Basic control and operating information 

describing how the engine components, sys-
tems, and installations operate, and informa-
tion describing the methods of starting, run-
ning, testing, and stopping the engine and its 
parts including any special procedures and 
limitations that apply. 

(5) Servicing information that covers de-

tails regarding servicing points, capacities of 
tanks, reservoirs, types of fluids to be used, 
pressures applicable to the various systems, 
locations of lubrication points, lubricants to 
be used, and equipment required for serv-
icing. 

(6) Scheduling information for each part of 

the engine that provides the recommended 
periods at which it should be cleaned, in-
spected, adjusted, tested, and lubricated, and 
the degree of inspection the applicable wear 
tolerances, and work recommended at these 
periods. However, the applicant may refer to 
an accessory, instrument, or equipment 
manufacturer as the source of this informa-
tion if the applicant shows that the item has 
an exceptionally high degree of complexity 
requiring specialized maintenance tech-
niques, test equipment, or expertise. The rec-
ommended overhaul periods and necessary 
cross references to the Airworthiness Limi-
tations section of the manual must also be 
included. In addition, the applicant must in-
clude an inspection program that includes 
the frequency and extent of the inspections 
necessary to provide for the continued air-
worthiness of the engine. 

(7) Troubleshooting information describing 

probable malfunctions, how to recognize 
those malfunctions, and the remedial action 
for those malfunctions. 

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