Which element is NOT typically included when requesting a weather briefing?

When requesting a weather briefing, it is standard practice to include relevant information that helps pilots and briefing personnel understand the context of the flight. This includes the type of flight plan to be filed, the estimated time of departure, and details about the aircraft, such as its identification and type. These elements allow the weather briefing personnel to tailor the weather information to the specific needs of the flight.

In contrast, the weather conditions at the destination are typically already known or can be accessed through various sources. When pilots request an official weather briefing, they usually focus on enhancing their understanding of the weather along the route and any potential hazards, rather than reiterating what is already available about the destination. Therefore, weather conditions at the destination do not need to be explicitly requested as part of the briefing request, making this the correct answer in this context.