Special Conditions: Cessna Model 650 Airplanes; High-Intensity Radiated Fields (HIRF)

These special conditions are issued for Cessna Model 650 airplanes modified by Columbia Avionics, Inc. These modified airplanes will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for transport category airplanes. The modification consists of installing an Electronic Flight Instrument System (EFIS) with the options for the Universal Avionics Vision 1 Synthetic Vision 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 established by the existing airworthiness standards.