What happens when JAN APCH and MLU APCH have NO Flight Data Input Output (FDIO)?

When JAN Approach and MLU Approach have no Flight Data Input Output (FDIO), the correct choice indicates that "cleared as filed may NOT be used." This situation arises because the lack of FDIO typically means that the controllers do not have access to real-time flight plan information or the ability to transmit clearances effectively.

In this context, flight plans submitted by pilots or generated in the system might not be fully communicable or verifiable due to the absence of data input interface functionality. As a result, controllers are unable to confidently clear flights as filed, as they might not have the necessary visibility on route information or other operational details essential for safe clearance.

Other options, while they may reflect possible outcomes in different scenarios, do not specifically align with the implications of having no FDIO. Therefore, the restriction on using "cleared as filed" becomes a safety and procedural necessity in such cases, ensuring that flight operations remain controlled and monitored effectively.