Planned Maintenance

Any maintenance activity for which a pre-determined job procedure is documented, for which all labor, materials, tools, and equipment required to carry out the task are estimated and their availability is assured before commencement of the task. Planned maintenance is commonly used to describe tasks carried out on a regular, scheduled basis. These tasks may be predictive in nature, such as routine subjective inspections and/or formal condition monitoring activities, or they may be preventative in nature, such as cleaning/changing filters and checking/adjusting clearances.