LIMITATION ON DELEGATION.

SEC. 106. LIMITATION ON DELEGATION. Section 44702(d) of title 49, United States Code, is amended by adding at the end the following: “(4)(A) With respect to a critical system design feature of a transport category airplane, the Administrator may not delegate any finding of compliance with applicable airworthiness standards or review of any system safety assessment required for the issuance of a certificate, including a type certificate, or amended or supplemental type certificate, under section 44704, until the Administrator has reviewed and validated any underlying assumptions related to human factors. “(B) The requirement under subparagraph (A) shall not apply if the Administrator determines the matter involved is a routine task. “(C) For purposes of subparagraph (A), the term critical system design feature includes any feature (including a novel or unusual design feature) for which the failure of such feature, either independently or in combination with other failures, could result in catastrophic or hazardous failure conditions, as those terms are defined by the Administrator.” .