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

(b)

(1) You may require a medical certificate for a passenger with a disability—

(i) Who is traveling in a stretcher or incubator;

(ii) Who needs medical oxygen during a flight; or

(iii) Whose medical condition is such that there is reasonable doubt that the individual can complete the flight safely, without requiring extraordinary medical assistance during the flight.

(2) For purposes of this paragraph, a medical certificate is a written statement from the passenger's physician saying that the passenger is capable of completing the flight safely, without requiring extraordinary medical assistance during the flight.

(3) To be valid, a medical certificate under this paragraph must be dated within 10 days of the scheduled date of the passenger's initial departing flight.

Example to paragraph (b)(3): A passenger who schedules a flight from New York to London on January 15 with a return on April 15 would have to show a medical certificate dated January 5 or later. The passenger would not have to show a second medical certificate dated April 5 or later.