Definition
A person certificated by the FAA to inspect, repair, and approve the return to service of aircraft and aircraft components, in accordance with applicable regulations and approved data. The certificate is typically issued with Airframe and/or Powerplant ratings.
Plain English
A trained, FAA-certified professional who works on aircraft -- inspecting them, fixing problems, and signing off that the aircraft is safe to fly again.
Context Anchor
You may deal with an aircraft maintenance technician when reporting a problem found during preflight, reviewing a maintenance write-up, or confirming that required work has been completed before flight.
Derivation
Aircraft means a machine that can fly. Maintenance comes from older words meaning to keep something in hand or keep it going. Technician comes from a word meaning skilled art or craft. Together, the term points to a skilled person who keeps aircraft in proper working condition.
Why Pilots Care
Pilots rely on these technicians to confirm that every aircraft is safe and airworthy before flight.
Intuition Check
Do not read this as just “someone who is good at fixing airplanes.” In FAA use, the key idea is authorized maintenance work performed within specific privileges and rules.
Example Sentence 1
After the rough-running engine was reported, an aircraft maintenance technician inspected the magnetos and signed the logbook to return the aircraft to service.
Example Sentence 2
After noticing unusual engine vibration, the pilot consulted the aircraft maintenance technician for diagnosis.