The Air Carrier Access Act (ACAA) regulations update: The Air Carrier Access Act (ACAA) regulations have been updated to incorporate new requirements. They will become enforceable May 13, 2009. To help you understand your rights under the updated ACAA, the National Network of ADA Centers announces the release of “An Overview of the ACAA.” Key changes include: Coverage extended to foreign carriers; New requirements for airport and aircraft accessibility and changes in airport services including reservations, facilities, in-flight and aircraft acquisitions; New requirements for passengers who use respiratory assistive devices including 48 - hour notification of use in advance of flight; New guidelines on provision of effective communication for passengers who are deaf or hard-of hearing; New requirements for passengers traveling with emotional support animals or psychiatric service animals to provide documentation and give 48-hours' notice before flight. Visit the Disability Law Index to review the full set of ACAA regulations as updated.