; and (2) a study at 2 other airports carried out by applying Type III beads on half of the centerline and Type I beads to the other half and providing for assessments from pilots through surveys administered by a third party as to the visibility and performance of the Type III glass beads as compared to the Type I glass beads over a 1-year period. 316. Regulatory reform Section 106(p)(5) of title 49, United States Code, is amended by inserting or aerospace after aviation . 317. FAA and NTSB review of general aviation safety (a) Study required Not later than 30 days after the date of enactment of this Act, the Administrator of the Federal Aviation Administration, in coordination with the Chairman of the National Transportation Safety Board, shall initiate a study of general aviation safety. (b) Study contents The study required under subsection (a) shall include— (1) a review of all general aviation accidents since 2000, including a review of— (A) the number of such accidents; (B) the number of injuries and fatalities, including with respect to both occupants of aircraft and individuals on the ground, as a result of such accidents; (C) the number of such accidents investigated by the National Transportation Safety Board; (D) the number of such accidents investigated by the Federal Aviation Administration; and (E) a summary of the factual findings and probable cause determinations with respect to such accidents; (2) an assessment of the most common probable cause determinations issued for general aviation accidents since 2000; (3) an assessment of the most common facts analyzed by the Federal Aviation Administration and the National Transportation Safety Board in the course of investigations of general aviation accidents since 2000, including operational details; (4) a review of the safety recommendations of the National Transportation Safety Board related to general aviation accidents since 2000