T.A.501 Maintenance Organisation
Regulation (EU) 2018/1142
The continuing airworthiness management organisation shall ensure that the aircraft and its components are maintained by organisations complying with the following requirements:
(1) The organisation holds a maintenance organisation approval issued or acceptable to the State of Registry.
(2) The scope of approval of the organisation includes the appropriate aircraft and/or component capability.
(3) The organisation has established an occurrence reporting system which ensures that any identified condition of an aircraft or component which endangers the flight safety is reported to the operator, the competent authority of the operator, the organisation responsible for the type design or supplemental type design and the continuing airworthiness management organisation.
(4) The organisation has established an organisation's manual providing a description of all the procedures of the organisation.
ED Decision 2020/002/R
The CAMO should establish a process to verify that the maintenance organisation complies with the applicable requirements of Part-T Subpart E, one of the inputs to this process may be whether the maintenance organisation holds an approval by the State of Registry issued in accordance with the requirements of ICAO Annex 6 Part I Section 8.7.
ED Decision 2019/009/R
The occurrence-reporting system should describe the procedures followed by the organisation whereby information on faults, malfunctions, defects and other occurrences that cause or might cause adverse effects on the continuing airworthiness of the aircraft are transmitted to the operator, to the organisation responsible for the type design of that aircraft, and to the State of Registry.