Must have a thorough working knowledge of complex aircraft avionics or electronic circuit maintenance systems such as, the electronics package in highly automated aircraft where the integrated flight and integrated countermeasures system, electronic multiplex communications bus, inertial navigation system, multi-function displays, head-up display, data transfer equipment, global positioning system, situation awareness data-link, data modem, flight control system, pivot-static system and related instrumentation, flight director instrumentation, central air data computer, engine, hydraulic and fuel quantity indicating systems, voice message warning, various modes of data, intercom, secure voice communications, identification friend or foe, and tactical air navigation system. WG 13: At least 12 months of specialized experiences working as an Electronic Integrated Systems Mechanic, WG-2610-12, and must possess the craftsman level of knowledge and skills to install, modify, overhaul, maintain, troubleshoot, repair, align, calibrate, and rebuild multi-system avionics complexes consisting of multiple completely integrated electronic avionics systems where the complex accomplishes a number of major functions.