What occurs during the inspection associated with Conditional Upkeep Maintenance?

The correct answer reflects the purpose of Conditional Upkeep Maintenance, which focuses on operations following specific overlimit conditions. This type of maintenance is essential for assessing the aircraft and its subsystems when certain thresholds—such as operational limits or performance indicators—have been exceeded. In this context, conducting an inspection allows for a targeted assessment of potentially compromised components or systems, ensuring that any issues arising from overuse or abnormal operation are identified and addressed. This approach is more efficient and effective compared to routine or scheduled inspections because it directly relates to actual operational experiences and conditions faced by the aircraft.

Other choices describe inspections that could be regular or upon observation but do not correctly capture the conditional nature of the upkeep that is specifically tied to identified overlimit situations, making them less relevant in this context.