What does "DM" stand for in maintenance terminology?

In maintenance terminology, "DM" stands for Discrepancy Maintenance. This term is utilized within aviation and other maintenance operations to refer to the process of identifying and addressing discrepancies in equipment or systems. Discrepancy Maintenance focuses on the repair or correction of issues that have been observed or reported, ensuring that any faults are documented and resolved to maintain safety and operational readiness.

The approach to Discrepancy Maintenance involves systematic troubleshooting, problem identification, and corrective actions, thereby allowing maintenance personnel to efficiently manage aircraft and equipment integrity. This practice is critical as it helps ensure that all operational discrepancies are addressed, ultimately enhancing the reliability of aviation operations.