unscheduled

Example:The engine required unscheduled maintenance due to a unnoticed part that had been worn out.

Definition:Maintenance work that is performed unexpectedly due to a problem or failure.

Example:The CEO called for an unscheduled meeting to address the urgent issue.

Definition:A meeting that is called for an unexpected or unplanned time.

Example:The factory experienced an unscheduled shutdown due to machinery malfunction.

Definition:A shutdown that occurs unexpectedly, violating the planned schedule.

Example:The airline offered an unscheduled flight due to high demand during the holiday season.

Definition:A flight that is operated outside the normal flight schedule.