; and (3) changes to FAA policy and documentation necessary to implement the recommendations of the Working Group. (d) Congressional briefing Not later than 1 year after the date on which the Administrator establishes the Working Group, the Administrator shall brief the appropriate committees of Congress on the progress made by the Working Group in carrying out the duties specified in subsection (c), recommendations of the Working Group, and the Administrator's efforts to implement such recommendations. (e) Definition of part 135 In this section the term part 135 means part 135 of title 14, Code of Federal Regulations. 324. Tower marking compliance (a) In general Not later than 180 days after the date of enactment of this section, the Administrator shall provide a briefing to the appropriate committees of Congress on implementation of the requirements of section 2110 of the FAA Extension, Safety, and Security Act of 2016 ( 49 U.S.C. 44718 note) (as amended by section 576 of the FAA Reauthorization Act of 2018 ( Public Law 115–254 , 132 Stat. 3391)). (b) Requirements The briefing required by subsection (a) shall include the following: (1) A description of, and timeframe for, the Administrator’s development of requirements to file notice of construction of meteorological evaluation towers and other renewable energy projects under the notice of proposed rulemaking RIN 2120-AK77. (2) A description of the FAA’s use of existing publicly accessible databases to collect and make available information about certain structures that are required to, or voluntarily, file notice with the FAA. (3) For the period beginning on July 15, 2016, and ending on the date the briefing required by subsection (a) is provided, a list of aircraft accidents during such period that are associated with covered towers (as such term is defined in section 2110(b)(1)(A) of the FAA Extension, Safety, and Security Act of 2016 ( 49 U.S.C. 44718 note) that are not marked in accordance with applicable guidance in the advisory circular of the FAA issued