Which group is involved in processing credentialing checks for airports?

The Transportation Security Clearinghouse (TSC) is the correct answer because it is specifically designated to handle the processing of credentialing checks for airport personnel. The TSC acts as a centralized repository for the vetting and management of information associated with individuals seeking access to secure areas of an airport. This group ensures that all personnel meet the required security standards set forth by the Transportation Security Administration (TSA) in the interest of maintaining aviation security.

In contrast, the Federal Aviation Administration (FAA) primarily oversees and regulates all aspects of civil aviation, focusing on safety standards and the operation of flight services, rather than credentialing. The Aviation Customer Service Team typically handles customer service-related inquiries and issues, which do not directly involve security credential checks. Lastly, the American Airport Council is an association that advocates for the interest of public and commercial use airports and works on various policy issues but does not engage in the processing of individual credentialing checks.