Introduction
What “no CD patch” refers to
The F-22 program historically faced challenges common to high-tech military aircraft: integrating rapidly evolving software, maintaining tight security around mission systems, and balancing sustainment cost with cutting-edge capability. Over the aircraft’s lifetime, many subsystems transitioned from legacy workflows (including removable media for database updates) to more modern, digitally-managed methods—driven by cybersecurity concerns, logistics efficiency, and evolving mission needs. This evolution naturally produced patches and field fixes; the “no CD” label captures a slice of that transition culture.
