Special Conditions; Raytheon Aircraft Company Model 300 Airplane; Protection of Systems for High Intensity Radiated Fields (HIRF)

These special conditions are issued to California Microwave, Inc., 701 Wilson Point Road, Martin State Airport, Box 4, Baltimore, Maryland 21220, for a Supplemental Type Certificate on the Raytheon Model 300 airplane. This airplane 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 an electronic flight instrument system (EFIS) for which 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 that provided by the applicable airworthiness standards.