Because avionics is involved in everything aboard an aircraft, including engines and flight controls, the aviation industry needs skilled individuals with aircraft avionics training. Avionics technicians may find themselves involved in testing, calibrating, troubleshooting and repairing avionics instruments. Avionics jobs may also require candidates to inspect and maintain electrical systems as well as set up and perform bench tests, repairs and replace defective components such as tachometers, temperature gauges and altimeters, as well as read electrical wiring diagrams.