If an aircraft does not depart within a specified timeframe, when must GWO TWR inform ZAE?

The correct response is that GWO TWR must inform ZAE 3 minutes after the release is issued if an aircraft fails to depart within the specified timeframe. This timeframe is crucial for ensuring proper communication and coordination between air traffic control facilities. When a delay is detected, notifying ZAE within this interval allows for timely adjustments in air traffic management, helps minimize congestion, and ensures that other operational functions can proceed without unnecessary hold-ups. This practice also aligns with established protocols to maintain safety and efficiency in air traffic operations.

Other durations listed, such as 5 minutes after initial clearance, immediately upon noticing the delay, or within 10 minutes of the scheduled departure, do not comply with the specific regulation or operational procedures that mandate the 3-minute notification timeframe. Adhering to the stipulated 3-minute rule ensures that all relevant parties remain informed and can respond appropriately to changes in an aircraft's status.