To direct the Secretary of Transportation to conduct a notice and comment rulemaking before implementing certain policies relating to obstruction evaluation aeronautical studies, and for other purposes.

The Secretary of Transportation may implement the policy set forth in the notice of proposed policy entitled “Proposal To Consider the Impact of One Engine Inoperative Procedures in Obstruction Evaluation Aeronautical Studies” published by the Department of Transportation on April 28, 2014 (79 Fed. Reg. 23300), only if the policy is adopted pursuant to notice and comment rulemaking and, for purposes of Executive Order 12866 (5 U.S.C. 601 note; relating to regulatory planning and review), is treated as a significant regulatory action within the scope of section 3(f)(1) of such Order.