; (2) use risk analysis to determine the accuracy of the automated weather observing systems outputs required for pilots to perform safe aircraft operations; and (3) provide a cost benefit analysis to determine whether the benefits outweigh the cost for any requirement not directly related to safety. (d) AIP eligibility of AWOS equipment Notwithstanding any other law, the Administrator shall waive any positive benefit-cost ratio requirement for automated weather observing system equipment under subchapter I of chapter 471, United States Code, if— (1) the airport sponsor or State, as applicable, certifies that a grant for such automated weather observing systems equipment under that chapter will assist an applicable airport to respond to regional emergency needs, including medical, firefighting, and search and rescue needs; and (2) the other requirements under that chapter are met. (e) Report Not later than September 30, 2018, the Administrator shall submit to the appropriate committees of Congress a report on the implementation of the requirements under this section. 2402. Requirement to consult with stakeholders in defining scope and requirements for Future Flight Service Program Not later than 180 days after the date of enactment of this Act, the Administrator of the Federal Aviation Administration shall consult with general aviation stakeholders in defining the scope and requirements for any new Future Flight Service Program of the Administration to be used in a competitive source selection for the next flight service contract with the Administration. 2403. Aviation fuel (a) Use of unleaded aviation gasoline The Administrator of the Federal Aviation Administration shall allow the use of an unleaded aviation gasoline in an aircraft as a replacement for a leaded gasoline if the Administrator— (1) determines that the unleaded aviation gasoline qualifies as a replacement for an approved leaded gasoline; (2) identifies the aircraft and engines that are eligible to use the qualified replacement unleaded gasoline