14 CFR Part 382 Nondiscrimination on the Basis of Disability in Air Travel (Air Carrier Access Act) (with amendments issued through May 2016)

(f) If a passenger with a disability provides the advance notice you require, consistent with this section, and the passenger is forced to change to another flight (e.g., because of a flight cancellation), you must, to the maximum extent feasible, provide the accommodation on the new flight. If the new flight is another carrier's flight, you must provide the maximum feasible assistance to the other carrier in providing the accommodation the passenger requested from you.