Requisitions to replace guidance and control units are based on which factor?

The basis for requisitions to replace guidance and control units is primarily driven by the number of unserviceables returned to the depot or manufacturer. This metric serves as a direct reflection of the units' performance and operational integrity.

When guidance and control units are returned as unserviceable, it indicates that they have either malfunctioned or have been damaged beyond repair during their operational use. Therefore, tracking the volume of these returns is crucial for determining how many replacements are necessary to maintain an operational inventory. This ensures that the munitions systems remain effective and that any gaps in capabilities resulting from unserviceable units are promptly addressed.

Other factors like the quantity of munitions in stock, demand from field units, or the expected life cycle of the units can influence decisions regarding stock levels and logistical planning, but they do not directly dictate replacement requisitions. The immediate focus lies on replacing units that are already out of service, making the tracking of unserviceable items the most critical factor in this context.