; 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. 447. Regulations ensuring assistance for individuals with disabilities in air transportation (a) In general Not later than 180 days after the date of enactment of this Act, the Secretary of Transportation shall— (1) review, and if necessary revise, applicable regulations to ensure that individuals with disabilities who request assistance while traveling in air transportation receive dignified, timely, and effective assistance at airports and on aircraft from trained personnel; and (2) review, and if necessary revise, applicable regulations related to air carrier training programs for air carrier personnel, including contractors, who provide physical assistance to passengers with disabilities to ensure that training under such programs— (A) occurs on an appropriate schedule for all new and continuing personnel charged with providing physical assistance