; and (B) whether to require third-party proof of behavioral training for a service animal; (4) the impact additional requirements on service animals could have on access to air transportation for passengers with disabilities; and (5) if impacts on access to air transportation for passengers with disabilities are found, ways to eliminate or mitigate those impacts. (c) Final rule Not later than 18 months after the date of enactment of this Act, the Secretary shall issue a final rule pursuant to the rulemaking conducted under this section. 438. Review of practices for ticketing, pre-flight seat assignments, and stowing of assistive devices for passengers with disabilities (a) Review (1) In general Not later than 30 days after the first meeting of the advisory committee on the air travel needs of passengers with disabilities established in section 439 (referred to in this section as the Advisory Committee ), the Secretary of Transportation shall direct the Advisory Committee to review current regulations with respect to practices for ticketing, pre-flight seat assignments, and stowing of assistive devices for passengers with disabilities. (2) Recommendations In carrying out the review under paragraph (1), the Advisory Committee shall, at a minimum, provide recommendations on whether current regulations should be modified or prescribed to— (A) provide accommodations for passengers with disabilities, if requested, in ticketing and pre-flight assignments; (B) require covered air carriers to provide priority access to bulkhead seating to passengers with disabilities who need access to features of those seats due to disabilities regardless of class of service of ticket purchased