Which document would you need to use to update your access control or identity management system?

• A. National Institute of Standards and Technology (NIST)
• B. International Civil Aviation Organization (ICAO)
• C. Radio Technical Commission on Aeronautics (RTCA)
• D. Federal Communications Commission (FCC)

Answer: (C)

In aviation environments, updating access control or identity management is guided by aviation-specific standards. RTCA develops and publishes standards for aviation systems, including security and cybersecurity aspects that cover who can access what and how identities are verified within critical avionics and operational networks. Using RTCA documents ensures your updates follow industry-approved practices and align with certification and safety expectations, which is why it’s the best choice here. While NIST provides general cybersecurity guidance, ICAO offers international aviation policy, and the FCC regulates communications, RTCA is the document set most directly applicable to updating an aviation access control or identity management system.