How many parts does a Job Control Number (JCN) consist of?

A Job Control Number (JCN) is an essential component in the Navy's Maintenance and Material Management (3-M) system, designed to track maintenance tasks and associated reports. The JCN is structured into three distinct parts, which work together to provide a comprehensive identification system for each job. These parts typically include elements such as the work center, the job number, and a suffix that specifies the sequence of work or particular details related to the job.

Each of these parts serves a specific purpose within the maintenance framework, ensuring that tasks can be adequately monitored and documented throughout their lifecycle. The three-part structure allows for efficient organization and retrieval of maintenance information, which is crucial for effective maintenance management and accountability.

Other configurations may appear, but the defined structure of three parts is standardized within the Navy's 3-M system, which contributes to its effectiveness in maintaining readiness and operational capability.