page_title: Aircraft maintenance
section_title: Maintenance personnel
hierarchical_section_title: Aircraft maintenance / Maintenance personnel
caption_attribution_description: English: Field maintenance is conducted on a Cessna 172.
context_page_description: Aircraft maintenance is the performance of tasks required to ensure the continuing airworthiness of an aircraft or aircraft part, including overhaul, inspection, replacement, defect rectification, and the embodiment of modifications, compliance with airworthiness directives and repair.
context_section_description: The ICAO defines the licensed role of aircraft maintenance (technician/engineer/mechanic), noting that "The terms in brackets are given as acceptable additions to the title of the license. Each Contracting State is expected to use in its own regulations the one it prefers." Thus, aircraft maintenance technicians, engineers and mechanics all perform essentially the same role. However different countries use these terms in different ways to define their individual levels of qualification and responsibilities.
  In Americas licenses for aircraft maintenance personnel include:
  Aircraft Maintenance Engineer (AME), also called Licensed Aircraft Maintenance Engineer (LAME or L-AME).
  Aircraft Maintenance Technician (AMT), or colloquially Airframe and Powerplant (A&P).
  Aircraft Maintenance Mechanic (AMM).
  As there will be 41,030 new airliners by 2036, Boeing expects 648,000 new commercial airline maintenance technicians from 2017 till then: 256,000 in Asia Pacific (39%), 118,000 in North America (19%) and 111,000 in Europe (17%).
  In Europe aircraft maintenance personnel must comply with Part 66, Certifying Staff, issued by the European Aviation Safety Agency (EASA). This regulation establishes four levels of authorization:
  Level 1: General Familiarisation, Unlicensed
  Level 2: Ramp and Transit, Category A
  can only certify own work performed for tasks which he/she has received documented training
  Level 3: Line Certifying Staff and Base Maintenance Supporting Staff, Category B1 (electromechanic) and/or B2(Avionics)
  can certify all work performed on an aircraft/engine for which he/she is type rated excluding base maintenance (generally up to and including A-Check)
  Level 4: Base Maintenance Certifying Staff, Category C
  can certify all work performed on an aircraft/engine for which he/she is type rated, but only if it is base maintenance (additional level-3 staff necessary)
  this authorization does not automatically include any level 2 or level 3 license.
caption: Field maintenance on a Cessna 172 being conducted from a van used to carry tools and parts
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