What does the block labeled 'Card number/RTG/MOS' refer to in the maintenance record?

The block labeled 'Card number/RTG/MOS' in the maintenance record specifically refers to the Maintenance Requirement Card (MRC) card number that is associated with rate-specific inspections. MRCs are critical for documenting and directing maintenance tasks according to the requirements set by the Navy's maintenance manuals. Each MRC is assigned a unique card number that allows personnel to identify and access the specific requirements for an inspection related to a certain rate (RTG) or Military Occupational Specialty (MOS).

This structured approach ensures that maintenance is performed consistently and meets established standards, supporting the overall safety and operational readiness of equipment. Understanding the significance of the MRC card number in the context of maintenance helps in tracking compliance with inspection protocols and managing the maintenance workload effectively.