SPACE SHUTTLE UPGRADE STUDY.

SEC. 307. SPACE SHUTTLE UPGRADE STUDY. (a) Study.—The Administrator shall enter into appropriate arrangements for the conduct of an independent study to reassess the priority of all Space Shuttle upgrades which are under consideration by the National Aeronautics and Space Administration but for which substantial development costs have not been incurred. (b) Priorities.—The study described in subsection (a) shall establish relative priorities of the upgrades within each of the following categories: (1) Upgrades that are safety related. (2) Upgrades that may have functional or technological applicability to reusable launch vehicles. (3) Upgrades that have a payback period within the next 12 years. (c) Completion Date.—The results of the study described in subsection (a) shall be transmitted to the Congress not later than 180 days after the date of the enactment of this Act.