; and (iv) the likelihood that the passenger changing or canceling the passenger's reservation will fill a seat on another flight by the same air carrier; (B) the costs of processing the change or cancellation electronically; and (C) any related labor costs; (2) with respect to a fee described in subsection (b)(2) imposed by an air carrier relating to checked baggage— (A) the costs of processing checked baggage electronically; and (B) any related labor costs; and (3) any other considerations the Secretary considers appropriate. (d) Updated regulations The Secretary shall update the standards required by subsection (a)(2) not less frequently than every 3 years. (e) Definitions In this section: (1) Air carrier The term air carrier means any air carrier that holds an air carrier certificate under section 41101 of title 49, United States Code. (2) Interstate air transportation The term interstate air transportation has the meaning given that term in section 40102 of title 49, United States Code.