FAQ n.19041

No, non-complex motor-powered aircraft used by commercial ATO or commercial DTO cannot be maintained by independent certifying staff because in accordance with M.A.201(h) or ML.A.201(e)(2), these aircraft  require maintenance release by an approved maintenance organisation (Part-CAO with maintenance privilege, Part-M Subpart F or Part-145).

Note: ‘GM1 ML.A.201(e)’ provides examples of aircraft not considered to be operated by a commercial ATO or a commercial DTO.