Maintenance records are kept IAW which directive and system?

• A. OPNAVINST 4790 & 3M System
• B. NAVSEA policy
• C. TYCOM guidelines
• D. Ship's internal policy

Answer: (A)

Maintenance records are kept in accordance with OPNAV Instruction 4790 and the 3M System because this pairing provides the Navy-wide policy and the standardized method for documenting every maintenance action. OPNAV instruction sets the overall requirements for maintenance management, while the 3M System is the built-in process used to plan, schedule, execute, and record preventive and corrective maintenance, maintaining a complete maintenance history, work orders, and discrepancies. This combination ensures consistency, traceability, and readiness across ships and commands.

Other sources like NAVSEA policy, TYCOM guidelines, or ship’s internal policy may inform local practices, but they do not establish the mandatory, uniform framework for records that the directive and the 3M system provide.