What does the term "shall" denote in maintenance procedures?

The term "shall" in maintenance procedures designates that the procedure is mandatory. This means that the action described must be performed as specified and is not open to interpretation or personal discretion. The use of "shall" ensures consistency and adherence to safety and operational protocols, which is crucial in maintenance tasks to ensure the reliability and integrity of aviation systems. This terminology helps eliminate ambiguity in procedures, thereby enhancing compliance and reducing the risk of errors during maintenance.