M.A. Subpart G organisation so that the issue may be discussed and resolved with the aircraft owner or M.A. Subpart G organisation.
AMC M.A.801 (h) Aircraft certificate of release to service
‘Endangers flight safety’ means any instance where safe operation could not be assured or which could lead to an unsafe condition. It typically includes, but is not limited to, significant cracking, deformation, corrosion or failure of primary struc-ture, any evidence of burning, electrical arcing, significant hydraulic fluid or fuel leakage and any emergency system or total system failure. An airworthiness directive overdue for compliance is also considered a hazard to flight safety.

AMC M.A.802 Component certificate of release to service
When an approved organisation maintains an aircraft component for use by the organi-sation an EASA Form 1 may not be necessary depending upon the organisation’s internal release procedures, however all the information normally required for the EASA Form 1 should be adequately detailed in the certificate of release to service.

ED 2008/013/R
AMC M.A.803 Pilot-owner authorisation

1.  
Privately operated means the aircraft is not operated pursuant to M.A.201 (h) and (i).

2.  
A Pilot-owner may only issue a certificate of release to service for maintenance he/ she has performed.

3.  
In the case of a jointly-owned aircraft, the maintenance programme should list:

·  The names of all Pilot-owners competent and designated to perform Pilot-owner maintenance in accordance with the basic principles described in Appendix VIII of Part-M. An alternative would be the maintenance programme to contain a pro-cedure to ensure how such a list of competent Pilot-owners should be managed separately and kept current.
·  The limited maintenance tasks they may perform.
4.  An equivalent valid Pilot-owner license may be any document attesting a pilot quali-fication recognised by the Member State. It does not have to be necessarily issued by the competent authority, but it should in any case be issued in accordance with the particular Member State’s system, awaiting the European pilot licensing system. In such a case, the equivalent certificate or qualification number should be used instead of the pilot’s licence number for the purpose of the M.A.801(b)3 (certificate of release to service).

EC 1056/2008  EU 127/2010EC 1056/2008

2.  for airworthiness review certificates it has issued, when the aircraft has remained within a controlled environment under its management, extend twice the validity of the airworthiness review certificate for a period of one year each time;
(f)  
By derogation from points M.A.901(c)2 and M.A.901(e)2, for aircraft that are in a controlled environment, the organisation referred to in (b) managing the continuing airworthiness of the aircraft, subject to compliance with paragraph (k), may extend twice for a period of one year each time the validity of an airworthiness review cer-tificate that has been issued by the competent authority or by another continuing airworthiness management organisation approved in accordance with Section A, Subpart G of this Annex (Part M);

(g)
By derogation from points M.A.901(e) and M.A.901(i)2, for ELA1 aircraft not used in commercial air transport and not affected by point M.A.201(i), the airworthiness review certificate may also be issued by the competent authority upon satisfactory assessment, based on a recommendation made by certifying staff formally approved by the competent authority and complying with provisions of Annex III (Part-66) as well as requirements laid down in point M.A.707(a)2(a), sent together with the application from the owner or operator. This recommendation shall be based on an airworthiness review carried out in accordance with point M.A.710 and shall not be issued for more than two consecutive years;
　
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