Career guides

Part-66 licensed maintenance technician

A Part-66 technician issues certificates of release to service for aircraft. The European licence, defined by Regulation (EU) No 1321/2014, is the benchmark for aircraft maintenance.

Duties

  • Scheduled inspections and troubleshooting in line or base maintenance.
  • Applying manufacturer data and airworthiness directives.
  • Signing releases to service within a Part-145 organisation.

Licence categories

  • B1: mechanical (airframe, engines, systems).
  • B2: avionics and electrical systems.
  • B3: non-pressurised piston aeroplanes; C: base maintenance release.

Training

  • Basic training in an approved Part-147 organisation, then practical experience in Part-145.
  • Type ratings added for each aircraft type.

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