Special Conditions: Gulfstream Model GV-SP and GIV-X; High Intensity Radiated Fields (HIRF)

These special conditions are issued for Gulfstream Aerospace Corporation Model GV-SP and GIV-X airplanes. These airplanes will have novel and unusual design features when compared to the state of technology envisioned in the airworthiness standards for transport category airplanes. Specifically, these airplanes will use the Honeywell EPIC System which includes the Electronic Display System (EDS), Air Data System, Inertial Reference System, and Automatic Flight Control System. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for the protection of these systems from the effects of high-intensity radiated fields (HIRF). These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that provided by the existing airworthiness standards.