313.3—Definitions.
As used in this part:
(a)
Energy efficiency means the ratio of the useful output of services in air transportation to the energy consumption of such services.
(b)
Energy statement is a statement of the probable impact of a major regulatory action on energy efficiency and energy conservation, contained in a decision, opinion, order, or rule.
(c)
Major regulatory action is any decision by the DOT decisionmaker or administrative law judge requiring an energy statement pursuant to § 313.4 of this part.