Special Conditions; Lancair LC41-550FG and LC42-550FG for the Protection of Systems From High Intensity Radiated Fields (HIRF)

These special conditions are issued to The Lancair Company, 22550 Nelson Road, Bend, Oregon 97701, for a Type Design Change for the Lancair LC41-550FG and LC42-550FG airplanes. These airplanes 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 electronic flight instrument system (EFIS) displays Model 700-00006-XXX-( ) manufactured by Avidyne Corporation 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 the airworthiness standards applicable to these airplanes.