An Approved Maintenance Organization, or AMO, is defined by the International Civil Aviation Organization (ICAO). According to ICAO, an AMO is “an organization approved by a Contracting State, in accordance with the requirements of Annex 8, Part II, Chapter 6 — Maintenance Organization Approval, to perform maintenance of aircraft, engine, propeller or parts thereof and operating under supervision approved by that State.” You can find this definition in the ICAO Doc 9760, Airworthiness Manual, Fourth Edition, 2020.
Part 145 outlines the European standard for approving organizations that maintain aircraft and their components registered in European Union Aviation Safety Agency (EASA) Member States. It also refers to the section of the U.S. Code of Federal Regulations that explains how to obtain a repair station certificate. This section includes the rules a certificated repair station must follow. A “repair station” is essentially a maintenance facility that holds a certificate issued by the U.S. Federal Aviation Administration under Part 145 of the Code of Federal Regulations.
In summary, AMOs play a crucial role in ensuring the safety and airworthiness of aircraft. They operate under strict guidelines that help maintain high standards in aviation maintenance. Understanding these organizations is important for anyone interested in the aviation industry, as they ensure that aircraft are kept in top condition.
