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

(a) Except for on-demand air taxi operators, as a U.S. carrier conducting passenger service you must permit any individual with a disability to use in the passenger cabin during air transportation an electronic assistive device specified in paragraph (c) of this section on all aircraft originally designed to have a maximum passenger capacity of more than 19 seats unless:

(1) The device does not meet applicable FAA requirements for medical portable electronic device; or

(2) The device cannot be stowed and used in the passenger cabin consistent with applicable TSA, FAA, and PHMSA regulations.