Hello pro, professional is aircraft electronic equipment maintenance learning cad is not important, professional basic courses: mechanical foundation, circuit analysis, low-frequency electronic circuits, high-frequency electronic circuits, digital electronics, human factors and aviation regulations, aerodynamic fundamentals and the principle of flight, the basis of aircraft construction.
Professional core courses: aircraft electronic equipment maintenance professional English, aircraft communication systems, instrumentation instructions and inertial reference systems, aircraft navigation systems, automatic flight control systems, aircraft power systems, typical models of aircraft electronic systems.