How are operational indications verified for the FDIO system?

The verification of operational indications for the Flight Data Input/Output (FDIO) system hinges upon confirming that all active lights are green. In this context, a green light indicates that the system is functioning correctly and that all necessary operational parameters are within acceptable limits. Green lights typically signify that processes are active and functioning as expected, which is crucial for flight operations.

Operational verification requires clear and unequivocal indications to ensure that the system is not only operational but also reliable for critical flight data input and output. The presence of all active lights being green offers a straightforward affirmation of correct functioning, thus ensuring the safety and integrity of flight operations.

In contrast, options that suggest red lights or flashing indicators may imply a malfunction or an alert condition that requires attention, which does not reflect a verified operational state. Alternating colors could indicate different system statuses but do not provide the clear and definitive operational assurance that solid green lights do. Thus, the requirement for operational indications within the FDIO system directly links to the confirmation of active lights being green as the standard for verification.