Final answer:
If an airman appeals the FAA's suspension or revocation of their certificate, the appeal is made to the National Transportation Safety Board (NTSB), not to the FAA, ICAO, CAAF, or AIAA. The NTSB provides independent reviews of FAA enforcement actions.
Step-by-step explanation:
If the Federal Aviation Administration (FAA) suspends or revokes an airman's certificate, and the airman appeals the FAA's action, the appeal is made to the National Transportation Safety Board (NTSB). The NTSB operates as an independent federal agency charged with investigating all civil aviation accidents in the United States and issuing safety recommendations aimed at preventing future accidents.
Furthermore, the NTSB provides an independent review of the FAA's enforcement actions against airmen when they are appealed. The International Civil Aviation Organization (ICAO) oversees international civil aviation standards and practices but is not involved in the appeal process of individual airmen's certificates within the United States.
The United States Court of Appeals for the Armed Forces (CAAF) and the American Institute of Aeronautics and Astronautics (AIAA) are not involved in this type of appeal process either. The correct answer to the student's question is A. National Transportation Safety Board (NTSB).