Back on posts #500 and 501, there were comments stating this AD cannot apply to an experimental. Unfortunately ADs can apply to experimentals, and this one does. The FAA clarifies this on page 8 as follows:
Request: EAA and two individual commenters requested the AD not apply to experimental or light sport aircraft, since they are not regulated in the same manner as type-certificated aircraft. EAA states the FAA should address any valid airworthiness concerns with parts intended for experimental aircraft through a Special Airworthiness Information Bulletin (SAIB) or safety alert for operators (SAFO). Two commenters requested the AD apply to experimental aircraft, because those aircraft operate in the same airspace as type-certificated aircraft and should use equipment with the same integrity. A few commenters, including AOPA, requested we clarify whether the AD applies to experimental aircraft.
FAA Response: We agree to clarify this issue. We confirm that the AD applies to all aircraft, including experimental, and we revised the AD to clarify the applicability. We made this AD applicable to the ADS600-EXP P/N 200-8013 units because the design of the Model ADS600-EXP P/N 200-8013 is substantially identical to the Model ADS600-B P/N 200-0012 and 200-0013, specifically with regard to the internal GPS and the SIL setting. While some commenters are correct that the FAA has chosen to minimize regulations on experimental aircraft because of the level of the safety risk, these risks normally apply to the individual airplane and do not affect the overall NAS. The safety risks defined in this AD extend beyond one aircraft and could affect many other aircraft as well as ATC. Therefore, we find it necessary to include experimental aircraft in the AD's applicability.
We do not agree that an SAIB or SAFO would be an appropriate solution. These documents contain information and recommended actions that are voluntary and not regulatory. Moreover, an SAIB is issued only for airworthiness concerns that do not rise to the level of an unsafe condition.
The mission of the FAA is aviation safety. ADs are used by the FAA to correct known safety defects. It would be contrary to the intent of the FAA's mission and statutory authority to exclude certain aircraft when we have determined that a part installed on those aircraft has a safety problem.
Request: EAA and two individual commenters requested the AD not apply to experimental or light sport aircraft, since they are not regulated in the same manner as type-certificated aircraft. EAA states the FAA should address any valid airworthiness concerns with parts intended for experimental aircraft through a Special Airworthiness Information Bulletin (SAIB) or safety alert for operators (SAFO). Two commenters requested the AD apply to experimental aircraft, because those aircraft operate in the same airspace as type-certificated aircraft and should use equipment with the same integrity. A few commenters, including AOPA, requested we clarify whether the AD applies to experimental aircraft.
FAA Response: We agree to clarify this issue. We confirm that the AD applies to all aircraft, including experimental, and we revised the AD to clarify the applicability. We made this AD applicable to the ADS600-EXP P/N 200-8013 units because the design of the Model ADS600-EXP P/N 200-8013 is substantially identical to the Model ADS600-B P/N 200-0012 and 200-0013, specifically with regard to the internal GPS and the SIL setting. While some commenters are correct that the FAA has chosen to minimize regulations on experimental aircraft because of the level of the safety risk, these risks normally apply to the individual airplane and do not affect the overall NAS. The safety risks defined in this AD extend beyond one aircraft and could affect many other aircraft as well as ATC. Therefore, we find it necessary to include experimental aircraft in the AD's applicability.
We do not agree that an SAIB or SAFO would be an appropriate solution. These documents contain information and recommended actions that are voluntary and not regulatory. Moreover, an SAIB is issued only for airworthiness concerns that do not rise to the level of an unsafe condition.
The mission of the FAA is aviation safety. ADs are used by the FAA to correct known safety defects. It would be contrary to the intent of the FAA's mission and statutory authority to exclude certain aircraft when we have determined that a part installed on those aircraft has a safety problem.