The master inventory list remains valid until which condition occurs?

The master inventory list retains its validity until there is a change in the contents of the inventory. This means that any time items are added, removed, or updated within the inventory, the master inventory list becomes outdated and is no longer a true reflection of the current items in stock. The purpose of this list is to ensure accurate tracking and management of items; thus, any modification in the inventory necessitates an update to the master list. Maintaining an accurate inventory is essential for compliance and operational effectiveness, particularly in the context of Aircrew Flight Equipment where precision is critical.

While periodic audits and the creation of new lists serve important functions in inventory management, they do not inherently affect the validity of the existing master inventory list unless there has been a change in the actual contents being inventoried. Thus, option B accurately captures the condition that invalidates the master inventory list.