The high performance Gulfstream IV corporate jet aircraft features several advanced systems. These include solid state electric power generation, digital electronics in conjunction with an integrated avionics system and electronic control of subsystems. The development and design of the various advanced subsystems into an efficient, integrated aircraft plan is a challenge to the engineers. The Gulfstream IV incorporates state-of-the-art systems with proven technology gained from private and government research. Some concepts are a first for use on commercial aircraft. The unique system requirements for the Gulfstream IV lay in a grey area between that normally used on general aviation aircraft and large commercial airliners. Operators demand performance that many times exceed the standard for both of these categories.