In mission-planning terms, which column identifies all required systems and subsystems?

• A. QRC
• B. SOP
• C. MESL
• D. FSL

Answer: (C)

Master Equipment List (MESL) is the catalog that enumerates every item needed for the mission, organized by system and the subsystems within each system. This column provides a complete view of all required assets, enabling planners to verify coverage, check for interdependencies, and ensure nothing essential is overlooked. By listing systems such as propulsion, avionics, life support, and mission payloads along with their subsystems, MESL serves as the authoritative reference for readiness and provisioning. Quick Reference Card focuses on rapid procedures, Standard Operating Procedures outline how tasks are performed, and the remaining option isn’t meant to catalog all equipment, so it doesn’t fulfill the purpose of identifying every required system and subsystem.