What is a key characteristic of preventive maintenance?

A key characteristic of preventive maintenance is that it aims to prevent the deterioration of assets. This proactive approach involves regularly scheduled inspections, servicing, and repairs to equipment or infrastructure to ensure optimal functioning and to mitigate the risk of unexpected failures. By addressing maintenance needs before they escalate into significant problems, preventive maintenance extends the lifespan of assets, enhances reliability, and can ultimately save costs associated with emergency repairs and downtime.

In contrast, the other options highlight characteristics that do not pertain to preventive maintenance, emphasizing either a lack of scheduling, a reactive emphasis, or a reduced need for documentation, which undermines the structured and organized nature of preventive maintenance practices.