M.A.502 Component maintenance

(a)     The maintenance of components other than the components referred to in points (b)(2) to (b)(6) of point 21.A.307 of Annex I (Part 21) to Regulation (EU) No 748/2012 or, as applicable, points (b)(2) to (b)(6) of point 21L.A.193 of Annex Ib (Part 21 Light) to Regulation (EU) No 748/2012 shall be performed by maintenance organisations approved in accordance with Subpart F of this Annex or with Annex II (Part-145) or Annex Vd (Part-CAO) to this Regulation, as applicable.

(b)     By way of derogation from point (a), where a component is fitted to the aircraft, the maintenance of such a component may be performed by an aircraft maintenance organisation approved in accordance with Subpart F of this Annex or with Annex II (Part-145) or with Annex Vd (Part-CAO) or by the certifying staff referred to in point (b)(1) of point M.A.801 of this Annex. Such maintenance shall be performed in accordance with the aircraft maintenance data or in accordance with the component maintenance data if agreed by the competent authority. Such aircraft maintenance organisation or the certifying staff may temporarily remove the component for maintenance where it becomes necessary to improve access to the component, except where additional maintenance is required due to the removal. Component maintenance performed in accordance with this point shall not be eligible for the issuance of an EASA Form 1 and shall be subject to the aircraft release requirements provided for in point M.A.801 of this Annex.

(c)      By way of derogation from point (a), where a component is fitted to the engine or the auxiliary power unit (APU), the maintenance of such component may be performed by an engine maintenance organisation approved in accordance with Subpart F of this Annex, or with Annex II (Part-145) or Annex Vd (Part-CAO). Such maintenance shall be performed in accordance with the engine or the APU maintenance data or in accordance with the component maintenance data if agreed by the competent authority. Such engine maintenance organisation may temporarily remove the component for maintenance if this is necessary to improve access to the component, except where additional maintenance is required due to the removal.

(d)     The maintenance of components referred to in point (b)(2) of point 21.A.307 of Annex I (Part 21) to Regulation (EU) No 748/2012 or in point (b)(2) of point 21L.A.193 of Annex Ib (Part 21 Light) to Regulation (EU) No 748/2012, where the component is fitted to the aircraft or is temporarily removed to improve access, shall be performed by an aircraft maintenance organisation approved in accordance with Subpart F of this Annex or with Annex II (Part-145) or Annex Vd (Part-CAO) to this Regulation, as applicable, by the certifying staff referred to in point (b)(1) of point M.A.801 of this Annex or by the pilot-owner referred to in point (b)(2) of point M.A.801 of this Annex. Component maintenance performed in accordance with this point shall not be eligible for the issuance of an EASA Form 1 and shall be subject to the aircraft release requirements provided for in point M.A.801 of this Annex.

(e)     The maintenance of components referred to in points (b)(3) to (b)(6) of point 21.A.307 of Annex I (Part 21) to Regulation (EU) No 748/2012 or in points (b)(3) to (b)(6) of point 21L.A.193 of Annex Ib (Part 21 Light) to Regulation (EU) No 748/2012 shall be performed either by the organisations referred to in point (a), or performed by any person or organisation and released with a “declaration of maintenance accomplished” issued by the person or organisation performing the maintenance. The “declaration of maintenance accomplished” shall contain at least basic details of the maintenance carried out, the date on which the maintenance was completed, and the identification of the organisation or person issuing it. It shall be considered a maintenance record and equivalent to an EASA Form 1 in respect of the component undergoing maintenance.