What conditions must solo students adhere to during sorties?

Solo students are required to adhere to visual meteorological conditions during their sorties because these conditions ensure a safe environment for flying without reliance on instruments. Visual meteorological conditions (VMC) refer to weather conditions that are generally clear and allow pilots to fly by visual references, meaning they can see the ground and navigate based on what they can observe outside the cockpit. This visibility is crucial for solo students, who may not yet have the experience to handle more complex situations or rely solely on instruments.

In contrast, the other conditions listed present challenges that solo students are not prepared to face. Night visual conditions limit visibility and increase the risk for less experienced pilots. Instrument meteorological conditions involve flying primarily by instruments due to low visibility, which is beyond the capability of many solo students. Hazardous weather conditions, which could include thunderstorms, high winds, or other adverse weather, are likewise unsafe and not suitable for solo flights. Therefore, adhering to visual meteorological conditions is essential for ensuring the safety and success of solo student flights.