The EASA Part-66 Aircraft Maintenance Licence

This section defines the aircraft maintenance licence and establishes the requirements for application, issue and continuation of its validity.

Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision.

(2)Category B1, is divided into the following subcategories:

B1.1 Aeroplanes Turbine,

B1.2 Aeroplanes Piston,

B1.E Aeroplanes with electric power plant and MTOM below 5 700 kg,

B1.3 Helicopters Turbine,

B1.4 Helicopters Piston.

[…]

(5)Category B3

The B3 licence is applicable to piston-engine non-pressurised aeroplanes of 2 000 kg MTOM and below.

Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision.

For the purpose of ratings on aircraft maintenance licences, aircraft shall be classified into the following groups:

(1)Group 1 is composed of:

(i)aeroplanes certified for a MTOM exceeding 5 700 kg; aeroplanes certified for a maximum passenger seating configuration of more than 19; aeroplanes certified for operation with a minimum crew of at least two pilots; aeroplanes equipped with (one) turbojet engine(s) or more than one turboprop engine; aeroplanes with maximum certified operating altitude exceeding FL290 powered with a power plant other than piston; aeroplanes with a power plant not being piston, turbine or electric;

(ii)helicopters certified for a MTOM exceeding 3 175 kg; helicopters certified for a maximum passenger seating configuration of more than nine; helicopters certified for operation with a minimum crew of at least two pilots; helicopters equipped with multiple engines; helicopters equipped with a power plant not being piston, turbine or electric;

(iii)gas airships other than ELA2;

(iv)non-conventional aircraft; and

(v)aircraft equipped with fly-by-wire systems.

Notwithstanding the first paragraph, the Agency may decide to classify into a subgroup of Group 2, Group 3 or Group 4, as appropriate, an aircraft which meets the conditions set out in the first paragraph, if it considers that the lower complexity of the particular aircraft justifies so.

(2)Group 2: aircraft other than those in Group 1 belonging to the following subgroups:

(i)subgroup 2a: single turboprop engine aeroplanes;

(ii)subgroup 2b: single turbine engine helicopters;

(iii)subgroup 2c: single piston engine helicopters;

(iv)subgroup 2E: aeroplanes with electric power plant.

(3)Group 3: piston engine aeroplanes other than those in Group 1.

(4)Group 4: sailplanes, powered sailplanes, balloons and airships, other than those in Group 1.

Quoted word for word from Regulation (EU) No 1321/2014 as amended by Regulation (EU) 2025/111, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision.

(b)The holder of an aircraft maintenance licence may not exercise its privileges unless:

1.in compliance with the applicable requirements of Annex I (Part-M), Annex II (Part-145), Annex Vb (Part-ML) and Annex Vd (Part-CAO); and

2.in the preceding 2-year period he/she has, either had 6 months of maintenance experience in accordance with the privileges granted by the aircraft maintenance licence or, met the provision for the issue of the appropriate privileges; and

3.he/she has the adequate competence to certify maintenance on the corresponding aircraft; and

4.he/she is able to read, write and communicate to an understandable level in the language(s) in which the technical documentation and procedures necessary to support the issue of the certificate of release to service are written.

Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision.