Under which conditions can an aircraft launch if the airborne weather radar is inoperative?

Launching an aircraft with inoperative airborne weather radar is permissible under specific visual flight rules (VFR) conditions. The correct answer highlights daytime VFR conditions, which indicate that there is adequate visibility and the weather is conducive to safe flying without reliance on the radar.

In VFR conditions, pilots are responsible for maintaining visual separation from both the terrain and other aircraft. When daytime VFR is in effect, the aircraft can safely operate based on visual cues rather than solely on instruments, which is especially important given that the airborne weather radar, typically used to detect storms and other weather phenomena, is not functioning. This allows pilots to avoid known hazards effectively by visually assessing their surroundings.

Additionally, the absence of thunderstorms en route reinforces that the conditions are safe for flight without the aid of radar. In summary, daytime VFR conditions ensure that the pilot can reliably assess the environment visually, allowing the aircraft to operate safely despite the inoperative radar.