Final answer:
A pilot can receive HIWAS broadcasts via the voice portion of a navigational aid if it has a voice activated feature.
Step-by-step explanation:
A pilot can receive Hazardous Inflight Weather Advisory Service (HIWAS) broadcasts via the voice portion of a navigational aid if its communications box has a(n) voice activated feature.
When the voice activated feature is enabled, the pilot can access HIWAS broadcasts by simply speaking a specific keyword or phrase into the communications box. This feature allows for hands-free operation, enhancing safety during flights.
For example, if the pilot says 'Weather', the communications box will activate and play the most recent HIWAS broadcast relevant to the pilot's location.