How quickly must GWO TWR advise ZAE of an unplanned missed approach?

The requirement for GWO TWR to advise ZAE of an unplanned missed approach is "immediately." This emphasis on prompt communication is crucial in air traffic management, as it ensures that all relevant parties are informed without delay to maintain safety and coordination among multiple aircraft within controlled airspace.

Immediate notification allows ZAE to react appropriately, including shifting traffic patterns and ensuring separation from other aircraft that may be operating in the vicinity. A swift response enhances situational awareness for all controllers and prevents potential conflicts, all while adhering to established aviation protocols.

In contrast, other time frames, such as within five minutes or after leveling off, may introduce critical delays that could jeopardize air safety. Advising before reaching the missed approach point would not suffice if the situation has already escalated, as timely updates are essential for effective decision-making during such occurrences.