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The EASA PART 66 license

The PART 66 license is the official European document issued by OSAC under the authority of EASA (European Aviation Safety Agency) and allowing any aeronautical technician to operate within a company.

It is obtained within a PART 147 approved organization (standard for EASA aeronautical training centers) by justifying theoretical training and regulatory practices.

There are different types of aeronautical licenses:

Maintenance of turbine aircraft: A1 and B1.1 licenses
Maintenance of piston engine aircraft: A2 and B1.2 licenses
Maintenance of turbine helicopters: A3 and B1.3 licenses
Maintenance of piston engine helicopters: B4 and B1.4 licenses
Avionics: B2 License
Light aviation (less than 2 tonnes): B3 license

minor scheduled line maintenance and simple fault rectification in 145

maintenance work carried out on the structure, engine and mechanical and electrical systems of the aircraft; work on avionic systems requiring only simple tests to demonstrate their correct operation and not requiring troubleshooting.

maintenance work performed on avionic and electrical systems, and electrical and avionic tasks in powerplant and mechanical systems requiring only simple tests to demonstrate proper operation; minor scheduled line maintenance and simple fault rectification.

only on non-pressurized piston aircraft with an MTOM less than or equal to 2000 kg: same as B1.

certification of the complete aircraft after base maintenance operations in 145.

MAPA offers two types of license

B1.1
B2
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