Special Conditions; Extra-Flugzeugbau GmbH Model 300 Series Airplanes

This special condition is being issued for the Extra-Flugzeugbau GmbH Model 300 Series airplanes. These airplanes will have novel and unusual design features when compared to the state of technology envisaged in the airworthiness standards for normal, utility, acrobatic, and commuter category airplanes. These design features include the use of composite materials for primary structure for which the regulations do not contain adequate or appropriate airworthiness standards and structural design criteria utilizing higher design load factors, because the design flight envelope of the Extra 300 far exceeds the minimum required design limits of part 23. This special condition contains the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that provided by the current airworthiness standards.