EC 1056/2008 EU 127/2010
M.A.503 Service life limited components
(a)
Installed service life limited components shall not exceed the approved service life limit as specified in the approved maintenance programme and airworthiness direc-tives, except as provided for in point M.A.504(c).
(b)
The approved service life is expressed in calendar time, flight hours, landings or cycles, as appropriate.
(c)
At the end the approved service life, the component must be removed from the air-craft for maintenance, or for disposal in the case of components with a certified life limit.
M.A.504 Control of unserviceable components
(a)
A component shall be considered unserviceable in any one of the following circum-stances:
1.
expiry of the service life limit as defined in the maintenance program;
2.
non-compliance with the applicable airworthiness directives and other continued airworthiness requirement mandated by the Agency;
3.
absence of the necessary information to determine the airworthiness status or eligibility for installation;
4.
evidence of defects or malfunctions;
5.
involvement in an incident or accident likely to affect its serviceability.
(b)
Unserviceable components shall be identified and stored in a secure location under the control of an approved maintenance organisation until a decision is made on the future status of such component. Nevertheless, for aircraft not used in commercial air transport other than large aircraft, the person or organisation that declared the com-ponent unserviceable may transfer its custody, after identifying it as unserviceable, to the aircraft owner provided that such transfer is reflected in the aircraft logbook or engine logbook or component logbook.
(c)
Components which have reached their certified life limit or contain a non-repairable defect shall be classified as unsalvageable and shall not be permitted to re-enter the component supply system, unless certified life limits have been extended or a repair solution has been approved according to M.A.304.
(d)
Any person or organisation accountable under Part-M shall, in the case of a para-graph (c) unsalvageable components:
1.
retain such component in the paragraph (b) location, or;
2.
arrange for the component to be mutilated in a manner that ensures that it is beyond economic salvage or repair before relinquishing responsibility for such component.
(e)
Notwithstanding paragraph (d) a person or organisation accountable under Part-M may transfer responsibility of components classified as unsalvageable to an organisa-tion for training or research without mutilation.
AMC M.A.504 (a) Control of unserviceable components
A component continues to be unserviceable until a decision is taken pursuant to AMC
M.A.605 (c) 6
AMC M.A.504 (b) Control of unserviceable components
1.
M.A.801(b)(2) and M.A.801(c) certifying staff or the Section A Subpart F / Part 145 approved maintenance organisation performing maintenance should ensure proper identification of any unserviceable components.
2.
The unserviceable status of the component should be clearly declared on a tag together with the component identification data and any information useful to define actions necessary to be taken. Such information should state, as applicable, in service times, maintenance status, preservation status, failures, defects or mal-functions reported or detected exposure to adverse environmental conditions, if the component has been involved in or affected by an accident/incident. Means should be provided to prevent unwanted separation of this tag from the component.
3.
M.A.801(b)(2) and M.A.801(c) certifying staff performing aircraft maintenance should send, with the agreement of the aircraft owner/lessee, any unserviceable component to a maintenance organisation approved under Section A Subpart F or Part-145 for controlled storage, or transfer the custody of the component to the owner itself under the conditions specified in M.A.504(b).
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