Special Conditions; Sagem Avionics Inc.; Electronic Flight Instrument System (EFIS) Installation in Cessna C-180; Protection of Systems From High Intensity Radiated Fields (HIRF)

These special conditions are issued to Sagem Avionics, Inc., 16923 Meridian East, Puyallup, WA 98375, for a Supplemental Type Certificate for the Cessna C-180 airplane. This airplane will have novel and unusual design features when compared to the state of technology envisaged in the applicable airworthiness standards. This novel and unusual design feature will include the installation of a two panel electronic display system, or Electronic Flight Instrument System (EFIS), manufactured by Sagem. The installation also includes 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.