; and (2) provide an informal public notice and comment opportunity on the waiver determination. (b) Annual report For each fiscal year, the Secretary shall submit to the appropriate committees of Congress a report on waivers issued under section 50101 of title 49, United States Code, during the fiscal year. D Airport Noise and Environmental Streamlining 171. Funding eligibility for airport energy efficiency assessments (a) Cost reimbursements Section 47140(a) of title 49, United States Code, as so redesignated, is amended by striking airport. and inserting airport, and to reimburse the airport sponsor for the costs incurred in conducting the assessment. . (b) Safety priority Section 47140(b)(2) of title 49, United States Code, as so redesignated, is amended by inserting , including a certification that no safety projects are being be deferred by requesting a grant under this section, after an application . 172. Authorization of certain flights by stage 2 aircraft (a) In general Notwithstanding chapter 475 of title 49, United States Code, not later than 180 days after the date of enactment of this Act, the Administrator of the Federal Aviation Administration shall initiate a pilot program to permit an operator of a stage 2 aircraft to operate that aircraft in nonrevenue service into not more than 4 medium hub airports or nonhub airports if— (1) the airport— (A) is certified under part 139 of title 14, Code of Federal Regulations; (B) has a runway that— (i) is longer than 8,000 feet and not less than 200 feet wide; and (ii) is load bearing with a pavement classification number of not less than 38; and (C) has a maintenance facility with a maintenance certificate issued under part 145 of such title; and (2) the operator of the stage 2 aircraft operates not more than 10 flights per month using that aircraft. (b) Termination The pilot program shall terminate on the earlier of— (1) the date that is 10 years after the date of the enactment of this Act