How Are Corrective Maintenance Needs Identified? When performing preventative maintenance, a technician might notice a problem during an emergency repair which might lead to bigger problems. The corrective maintenance order will address the underlying problem. Corrective maintenance involves servicing, restoring, or replacing an asset. Just a few instances: Production line . A technician inspecting a production line as part of routine maintenance finds a vital component severely worn. A corrective maintenance order can be initiated within the next month to repair or restore the broken component. HVAC systems . In the middle of winter, a technician is called out to fix an emergency breakdown of the heating system. Upon arrival, he discovers that the filters are unclean or partially clogged. This can prompt a call for corrective maintenance to clean or replace filters to boost performance and reduce heat loss. Public works . A technician fixing up a road can f...