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

(2) With respect to any situation in which boarding and deplaning by level-entry loading bridges or accessible passenger lounges to and from an aircraft is not available, you must ensure that there is an accessible route between the gate and the area from which aircraft are boarded (e.g., the tarmac in a situation in which level-entry boarding is not available). An accessible route is one meeting the requirements of the Americans with Disabilities Act Accessibility Guidelines (ADAAG), sections 4.3.3 through 4.3.10.