This document supersedes DO-230B published in 2008. It provides standards and guidelines for implementing access control systems in the context of an Integrated Security System for an Airport. DO-230C aligns the standard to the new version of the "Recommended Security Guidelines for Airport Planning, Design Construction", issued by the Transportation Security Administration in 2011. The document contains the most current information regarding aviation credentialing initiatives – the introduction of new Personal Identity Verification (PIV) Interoperable (I) and Compatible (C) specifications.