49 U.S.C. § 41710: Time requirements

When a matter requiring action of the Secretary of Transportation is submitted under section 40109(a) or (c)–(h), 41309, or 42111 of this title and an evidentiary hearing—(1) is ordered, the Secretary shall make a final decision on the matter not later than the last day of the 12th month that begins after the date the matter is submitted; or (2) is not ordered, the Secretary shall make a final decision on the matter not later than the last day of the 6th month that begins after the date the matter is submitted.