Special Conditions; Dual Innovative Solutions & Support Electronic Flight Instrument Systems (EFIS) Installation in Pilatus PC-12, PC-12/45, and PC-12/47; Protection of Systems for High Intensity Radiated Fields (HIRF)

These special conditions are issued to Innovative Solutions & Support (IS&S), 720 Pennsylvania Drive, Exton, PA 19341-1129, for a Supplemental Type Certificate for the Pilatus PC-12, PC-12/45, and PC- 12/47 airplanes. These airplanes will have novel and unusual design features when compared to the state of technology envisaged in the applicable airworthiness standards. These novel and unusual design features include the installation of two 12" x 9" Integrated Flat Panel Display (IFPD) Electronic Flight Instrument Systems (EFIS), manufactured by IS&S, and components associated with this display system. The applicable regulations do not contain adequate or appropriate airworthiness 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 the airworthiness standards applicable to these airplanes.