What does "NO SVFR" indicate on a sectional chart above an airport box?

The indication "NO SVFR" on a sectional chart signifies that Special Visual Flight Rules (SVFR) are not authorized for fixed-wing aircraft in that particular area. This regulation is essential for maintaining safety and operational standards in controlled airspace, especially in busy airspace environments or near airports where specific visibility and cloud clearance criteria must be met.

When "NO SVFR" is marked, it means that pilots of fixed-wing aircraft cannot operate under Special VFR conditions, which allow for operations in lower visibility than typically required under standard Visual Flight Rules (VFR). This restriction indicates that normal VFR flight operations are expected and that all pilots must adhere to the standard visibility and cloud clearance requirements applicable to that airspace, ensuring safety and compliance as per regulatory standards.