What is a "TDR" in the context of 3-M documented maintenance actions?

In the context of 3-M documented maintenance actions, a "TDR" stands for Trouble Discrepancy Report. This report is essential within the 3-M maintenance management system as it facilitates the identification and documentation of problems encountered during maintenance operations.

When a maintenance personnel discovers a discrepancy or issue with equipment, the TDR serves as a formal mechanism to record the details of the trouble. This ensures that the problem is communicated to the appropriate maintenance team members and management, allowing for effective tracking, analysis, and resolution of the issue. By documenting the discrepancy accurately through a TDR, it helps improve maintenance practices, enhances equipment reliability, and fosters a culture of continuous improvement in operational readiness.

Other options, while related to different aspects of maintenance and training, do not specifically refer to the documentation of discrepancies in maintenance actions, which is the primary function of a TDR.