What action would be taken if the letter 'Y' appears in an MRC NUMBER?

When the letter 'Y' appears in an MRC (Maintenance Requirements Card) NUMBER, it indicates that replacement parts are necessary to complete the maintenance task. This designation signals to maintenance personnel that specific parts must be available before the job can be executed effectively. Recognizing this coding within the MRC helps ensure that maintenance is performed efficiently and reduces downtime caused by unavailability of essential parts.

In contrast, the other options suggest different actions or conditions. A review of the maintenance procedure or tasks scheduled for review would be initiated under different circumstances that do not involve an immediate need for replacement parts. Urgent repair work typically points to a situation requiring immediate attention for operational integrity, which is distinct from the requirement indicated by the presence of 'Y' in the MRC NUMBER. Understanding these codes is essential for effective maintenance planning and inventory management within the Navy's maintenance system.