Formal maintenance philosophies are required by organizations whose primary responsibility is to ensure systems are ready when expected, such as space agencies and military.
[2] Labor-intensive planned maintenance began during the rise of the Industrial Revolution and depends upon periodic diagnostic evaluation based upon calendar dates, distance, or use.
Some organizations have eliminated most labor-intensive periodic maintenance and diagnostic down time by implementing designs that bring all sensor status to fault indicators near users.
The system level of reporting that is appropriate for Condition Based Maintenance are critical, alert, and emergency, which indicate software termination due to failure.
For example, lighting up a fault indicator in situations if human intervention is not required induces breakage by causing maintenance personnel to perform work when nothing is already broken.