Which statement describes the characteristics of demand supported parts?

The statement that demand supported parts are controlled based on a 180-day period for requisition is accurate. This indicates that these parts are managed by monitoring their usage and demand over a specific period, which helps in determining when to reorder and maintain adequate stock levels. By focusing on a defined timeframe, maintenance operations can effectively assess the frequency of requisition and avoid overstocking or stockouts, ensuring that the parts needed for aircraft maintenance are available when required.

Proper management of demand supported parts is crucial to maintaining operational efficiency, as it allows for the timely availability of components necessary for repairs or service without excessive investment in inventory. This approach aligns with best practices in inventory management, particularly in industries such as aviation, where precision and reliability are paramount.