Document ID: chunk:federal_register_of_legislation:F2025C00150:front:0:p6
Version: federal_register_of_legislation:F2025C00150
Segment Type: other
Provision Reference: 
Character Range: 15244–18141

as follows:
1. A person who holds a Category A licence endorsed with a subcategory may perform maintenance certification for that subcategory maintenance if:
 (i) the person carried out the maintenance; and
 (ii) the maintenance is maintenance of a kind mentioned in Appendix II of the Part 145 MOS;
2. A person who holds a Category A licence endorsed with a subcategory may issue a certificate of release to service for maintenance if:
 (i) the maintenance was carried out by the person; or
 (ii) the maintenance and its maintenance certification were carried out by another person who holds a Category A licence with the appropriate subcategory; and
 (iii) the maintenance was maintenance of a kind mentioned in Appendix II of the Part 145 MOS; and
 (iv) the aircraft being maintained is covered by the subcategory of licence held;
3. A reference to maintenance in subparagraphs (a) 1 or 2 does not include:
 (i) supervision of maintenance; or
 (ii) for a subcategory A1 licence, maintenance of a propeller-driven aeroplane unless the subcategory A1 licence holder:
(A) holds a B1.1 subcategory endorsement that permits the holder to perform maintenance certification on the propeller system of a propeller-driven aeroplane; or
(B) is positively endorsed in the subcategory A1 to provide such maintenance.
4. Subject to paragraph 66.A.45 (b), a person who holds a Category B1 licence endorsed with a subcategory may perform maintenance certification for that subcategory maintenance if:
 (i) the person carried out the subcategory maintenance; and
 (ii) the maintenance is any of the following:
(A) work on an aircraft system designated in Table 1, as structural, powerplant, mechanical or electrical;
(B) unless the licence is specifically subject to an avionics LRU exclusion, replacement of an avionic line replaceable unit that requires only simple tests to prove its serviceability;
(BA) updating the software in an avionic system, provided that:
                (I) the system has a discrete test facility to confirm the success of the updating; and
                (II) the serviceability of any other system affected by the updating is also confirmed; and
                (III) only simple tests are necessary to verify the serviceability of the system and any other system affected by the updating;
(C) category A licence tasks of a kind mentioned in Appendix II of the Part 145 MOS for the aircraft type rating or ratings held
(D) functional checks of avionic systems that can be conducted as a simple test;
            (E) troubleshooting of avionic systems that can be conducted as a simple test;
(F) as a daily, or manufacturer's equivalent, inspection, or as an extended diversion time operation (EDTO) pre-flight inspection;
(G) scheduled routine inspection of fibre-reinforced plastic composite structures — but not including an inspection in which specialised equipment is used,