An aircraft mechanic first and foremost possesses a thorough understanding of the operation of the aircraft they are responsible for and of aviation regulations. Their skills vary depending on their specialization (airframe, engines, mechanical, electrical, pneumatic, hydraulic systems, flight instruments, etc.). Generally speaking, they must: • Know how to take and interpret parameter readings, • Be proficient in using the tools to perform tests, • Read a diagram or technical document and follow instructions precisely, • Be proficient in technical English (manufacturer documentation), • Organize their work while respecting quality, cost, and time constraints. Knowing that the lives of thousands of passengers depend on the quality and thoroughness of their work, aircraft mechanics are above all endowed with a strong sense of responsibility. In all circumstances, they know how to act quickly, calmly, and effectively as part of a team.