How are maintenance records maintained?

• A. IAW OPNAVINST 4790 & 3M System
• B. In a logbook
• C. In a database with no standard
• D. In the 2M System

Answer: (A)

Maintenance records are kept in accordance with OPNAV Instruction 4790 and the 3M System. OPNAVINST 4790 sets the Navy’s policy for how maintenance is managed, documented, and traced—defining who does what, when, and how records are kept. The 3M System puts that policy into practice by standardizing how maintenance actions are scheduled, executed, and recorded, linking maintenance requirement cards, work orders, parts, and time logs into a complete history. This consistent approach supports readiness, allows for trend analysis and audits, and ensures accountability across units. A logbook alone doesn’t provide the structured data and traceability required; a database with no standard would lead to inconsistent records; and a system called 2M isn’t the Navy’s established maintenance framework.