Equipment Guide Lists (OPNAV 4790/81) are used with what?

• A. The ship's log
• B. The maintenance budget
• C. A controlling MRC when it applies to a number of identical items
• D. The safety plan

Answer: (C)

Equipment Guide Lists are used to apply a single controlling maintenance requirement card to a group of identical items. In Navy maintenance, many items may share the same tasks, intervals, and requirements. Rather than creating separate MRCs for each piece, one controlling MRC covers the group, and the Equipment Guide List identifies which items are included. This keeps maintenance consistent across all identical units, simplifies scheduling, and ensures records stay clean and uniform. The EGL acts as the link that shows which equipment is governed by that single MRC, typically listing item identifiers and locations. So, the purpose is to coordinate maintenance for a set of identical equipment through one controlling MRC, rather than handling each item with its own distinct card.