; and (B) may consider— (i) additional standards, including those provided in the Web Content Accessibility Guidelines 2.1 Level AA of the Web Accessibility Initiative of the World Wide Web Consortium (or subsequent versions); and (ii) the technical capabilities of the information communication technology. (4) Consultation For purposes of this section, the Secretary may consult with the Architectural and Transportation Barriers Compliance Board and any other relevant department or agency to determine appropriate accessibility standards. (5) Review Not later than 5 years after promulgating the final rule under paragraph (2), and every 5 years thereafter, the Secretary shall review the rules issued under this subsection and update such rules as necessary. (b) Audit (1) Initial audit (A) Requirement Not later than 1 year after the date on which the Secretary promulgates the final rule under subsection (a)(2), and subsequently thereafter as described in paragraph (3), the Secretary shall commence an audit of each customer-focused website, application, or information communication technology of an air carrier, foreign air carrier, or airport for the purpose of informing improvements that ensure any individual with a disability has equal access to travel, in accordance with such final rule. Such audit shall be limited to a review of the following: (i) The accessibility of any customer-focused website or application of an air carrier, foreign air carrier, or airport. (ii) The accessibility of the information communication technology an air carrier, foreign air carrier, or airport uses to— (I) notify any individual with a disability of changes to flight information (such as delays, gate changes, or boarding announcements)