A statement granted at the discretion of a Federal Air Surgeon to a person who is disqualified from obtaining a pilot's medical certification. Granted only if the disqualifying condition is static or non-progressive, and the person has been found capable of performing airman duties without endangering public safety. A Statement of Demonstrated Ability does not expire and authorizes a designated aviation medical examiner to issue a medical certificate of a specified class if the examiner finds that the condition described on its face has not adversely changed. In granting a Statement of Demonstrated Ability, the Federal Air Surgeon may consider the persons operational experience and any medical facts that may affect the ability of the person to perform airman duties.