; (B) airports; (C) communities surrounding airports; (D) aircraft and avionics manufacturers; (E) operators of covered stage 3 aircraft other than air carriers; and (F) such other stakeholders and aviation experts as the Comptroller General considers appropriate. (c) Report Not later than 18 months after the date of enactment of this Act, the Comptroller General shall submit to the Committee on Transportation and Infrastructure of the House of Representatives and the Committee on Commerce, Science, and Transportation of the Senate a report on the results of the review. (d) Covered stage 3 aircraft defined In this section, the term covered stage 3 aircraft means an aircraft weighing more than 75,000 pounds that is not capable of meeting the stage 4 noise levels in part 36 of title 14, Code of Federal Regulations. 156. Addressing community noise concerns When proposing a new area navigation departure procedure, or amending an existing procedure that would direct aircraft between the surface and 6,000 feet above ground level over noise sensitive areas, the Administrator of the Federal Aviation Administration shall consider the feasibility of dispersal headings or other lateral track variations to address community noise concerns, if— (1) the affected airport operator, in consultation with the affected community, submits a request to the Administrator for such a consideration; (2) the airport operator’s request would not, in the judgment of the Administrator, conflict with the safe and efficient operation of the national airspace system