There are two types of Aircraft Maintenance Licenses currently recognised by the Irish Aviation Authority:
1. Aircraft Maintenance Licenses (AML's), commonly referred to as a Part 66 Licence,
2. Aircraft Maintenance Engineers' Licences (AMEL's), commonly referred to as a National Licence.
Aircraft Mantenance Licenses (AML's) are issued in accordance with the requirements of Commission Regulation (EC) nO. 1321/2014 Annex II (Part 66) for aircraft that are subject to European Regulation (EC) 216/2008. This is the Part 66 licence that is normally issued.
Aircraft Maintenance Engineers' Licences (AMEL's) are issued in accordance with the Irish Aviation Authority (Personnel Licensing Order) SI 333 of 2000. These licences are referred to national licences. With effect from 28th September 2010 the privileges of a national licence may only be used for the certification of maintenance performed on aircraft which are not subject to (EC) 216/2008.
Irish registered aircraft which are not subject to European regulation (EC) 216/2008 may have maintenance certified by persons holding the appropriate rating on their national Aircraft Maintenance Engineer's Licences (AMEL) in accordance with the privileges stated in Irish Aviation Authority (Personnel Licensing Order) SI 333 of 2000.