(Please note the following statements from
FAA
Advisory Circular 20-62C entitled "ELIGIBILITY, QUALITY, AND IDENTIFICATION
OF
APPROVED REPLACEMENT PARTS"):
3.
BACKGROUND.
An increasing amount of replacement parts (including standard parts), materials,
appliances, and instruments are offered for sale as being of aircraft quality when actually the quality and
origin of these units are unknown. Users of such units are usually not aware of the potential hazards involved
with replacement parts that are not eligible for use on certificated aircraft. Frequently such units are
deceptively advertised or presented as "unused," "like new," or "remanufactured!' This implies that the
quality of such units is equal to an original or appropriately repaired or overhauled unit.
The performance rules for replacement of parts and materials used in the maintenance and alteration of
U.S. certificated aircraft are specified in Federal Aviation Regulations (FAR) 43.13 and FAR 145.57. The
responsibility for the continued airworthiness of the aircraft, which includes the replacement of parts, is the
responsibility of the
ownerioperator as outlined in FAR 91.163, FAR 121.363, FAR 123.45, FAR 127.1 31
and FAR 135.143 (a).
4.
I
DENTI FICATION OF THE APPROVED PARTS.
Approved serviceable replacement
parts are identified as follows:
a.
By an FAA Form 8130-3 (Formerly FAA Form
186), Airworthiness Approval Tag. An Airworthiness
Approval Tag identifies a part or group of parts that have been approved by authorized FAA
representatives.
b. By an
FAATechnical Standard Order 0) number and identification mark that indicates the part or
appliance has been manufactured under the requirements of FAR 37.
c.
By an
FWPMA symbol, together with the manufacturer's name, trademark or symbol, part number,
and the make and model of the type certificated product on which the part is eligible for installation,
stamped on the part. An FAA Parts Manufacturer Approval (FWPMA) is issued under FAR 21.305.
The make and model information may be on a tag attached to the part.
d.
By shipping ticket, invoice, or other document which provides evidence that the part was produced
by a manufacturer holding an FAA Approved Production Inspection System issued
utlder FAA 21,
Subpart F, or by a manufacturer holding an FAA Production Certificate issued under FAA 21, Subpart
G.
e.
By a certificate of airworthiness for export issued by a foreign government under the provisions of
FAR 21, Subpart
N.
I
I.
KNOW
YOUR SUPPLIER.
It has come to our attention that many reproduced parts and
components, particularly instruments which have been manufactured by persons other than the original
manufacturer, are available for purchase and installation on U.S. certificated aircraft. Often, an original part
is used as a sample to produce duplicates. The reproduced parts appear to be as good as the original part;
however, there are many unknown factors to be considered that may not be readily apparent to the
purchaser,
i.e., heat treating, plating, inspections, tests and calibrations. All too often the faulty part is not
discovered until
a
malfunction or an accident occurs.
I
2.
SUM
MARY.
in accordance with FAR'S, certification of materials, parts, and appliances for return
to service, for use on aircraft,
is
the responsibility of the person or agency who signs the approval.
The
ownerloperator, as denoted in paragraph
3
of this advisory circular, is responsible for the continued
airworthiness of the aircraft. To assure continued safety in aircraft operation,
it
is essential that great care
be used when inspecting, testing, and determining the acceptability of all parts and materials. Particular
caution should be exercised when the identity of materials, parts, and appliances cannot be established
or when their origin is in doubt.
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