<Ul> <Li> Condition - based maintenance </Li> <Li> Planned preventive maintenance </Li> <Li> Preventive maintenance </Li> <Li> Corrective maintenance (does not use diagnostics) </Li> <Li> Integrated vehicle health management </Li> </Ul> <Li> Condition - based maintenance </Li> <Li> Planned preventive maintenance </Li> <Li> Corrective maintenance (does not use diagnostics) </Li>

Which of the following can be used as evidence of fault in the field