Safety Standards for Flight Guidance Systems

This action amends the airworthiness standards for new designs and significant product changes for transport category airplanes concerning flight guidance systems. The standards address the performance, safety, failure protection, alerting, and basic annunciation of these systems. This rule is necessary to address flight guidance system vulnerabilities and to consolidate and standardize regulations for functions within those systems. In addition, this rule updates the current regulations regarding the latest technology and functionality. Adopting this rule eliminates significant regulatory differences between the U.S. and European airworthiness standards.