; and (2) is limited to weighing less than 55 pounds, including the weight of anything attached to or carried by the aircraft, unless otherwise approved through a design, construction, inspection, flight test, and operational safety program administered by a community-based organization. . (b) Technical and conforming amendments (1) Table of contents The table of contents for chapter 448, as amended by section 2127 of this Act, is further amended by inserting after the item relating to section 44807 the following: 44808. Special rules for model aircraft. . (2) Special rule for model aircraft Section 336 of the FAA Modernization and Reform Act of 2012 ( 49 U.S.C. 40101 note) and the item relating to that section in the table of contents under section 1(b) of that Act (126 Stat. 13) are repealed. 2129. Authority The rules adopted by the Administrator of the Federal Aviation Administration in the matter of registration and marking requirements for small unmanned aircraft (FAA–2015–7396; published on December 16, 2015) that were vacated by the United States Court of Appeals for the District of Columbia Circuit in Taylor v. Huerta (No. 15–1495; decided on May 19, 2017) shall be restored to effect on the date of enactment of this Act. 2130. Unmanned aircraft systems aeronautical knowledge and safety (a) In general Chapter 448, as amended by section 2128 of this Act, is further amended by inserting after section 44808 the following: 44809. Aeronautical knowledge and safety test (a) In general An individual may not operate an unmanned aircraft system unless— (1) the individual has successfully completed an aeronautical knowledge and safety test under subsection (c); (2) the individual has authority to operate an unmanned aircraft under other Federal law; (3) the individual is a holder of an airmen certificate issued under section 44703