Which condition does NOT require the solicitation of PIREPs?

Visibility greater than 5 miles does not require the solicitation of PIREPs because it generally indicates acceptable flying conditions. In aviation operations, PIREPs (Pilot Reports) are typically requested when weather conditions are deteriorating or when they are critical for safety, such as limited visibility, low ceilings, thunderstorms, or significant turbulence.

When visibility exceeds 5 miles, it is usually considered sufficient for most types of visual flight rules (VFR) operations, and thus there isn't an urgent need for additional reports from pilots about the situation. This option indicates a condition where pilots aren’t likely to encounter significant issues, making the need for PIREPs less critical. In contrast, conditions like ceilings at or below 5,000 feet, thunderstorms, and moderate turbulence often require pilots to provide PIREPs to share valuable real-time information about their experiences, ensuring all pilots are aware of the changing conditions that could impact safety.