AMC1 M.A.504 Segregation of components
ED
Decision 2020/002/R
(a) Unserviceable components should be
identified and stored in a separate secure location that is managed by the
maintenance organisation until a decision is made on the future status of such
components. Certifying staff outside maintenance organisations (M.A.801(b)(1),
or M.A.801(c)) that release aircraft maintenance should
send, with the agreement of the aircraft owner/lessee, any unserviceable
component to a maintenance organisation for controlled storage. Nevertheless,
the person or organisation that declared the component unserviceable may
transfer its custody, after identifying it as unserviceable, to the aircraft
owner/lessee provided that such transfer is reflected in the aircraft logbook,
or engine logbook, or component logbook.
(b) ‘Secure location under the control of an
approved maintenance organisation’ refers to a location that is managed by the
approved maintenance organisation that prevents the component from being
reused or tampered with. This may include facilities that are established by
the organisation at locations different from the main maintenance facilities.
These locations should be identified in the relevant procedures of the
organisation.
(c) In the case of unsalvageable components,
the person or organisation should:
(1) retain such components in the secure
location referred to in paragraph (b);
(2) arrange for the component to be mutilated
in a manner that ensures that it is cannot be restored for use, before
disposing it; or
(3) mark the component indicating that it is
unsalvageable, when, in agreement with the component owner, the component is
disposed of for legitimate non-flight uses (such as training and education
aids, research and development), or for non-aviation applications, mutilation
is often not appropriate. Alternatively to marking, the original part number
or data plate information can be removed, or a record kept of the disposal of
the component for legitimate non-flight uses.
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