Special VFR (SVFR)
What a special-VFR clearance is, when it's useful, and its limitations — especially at night.
Special VFR (SVFR) is a clearance that lets a VFR pilot operate within the surface area of controlled airspace (Class B, C, D, or surface-based E) when the weather is below normal VFR minimums but still flyable. It exists to let you depart or arrive at a field that's reporting, say, 1.5 miles visibility — below the 3-mile Class D minimum — without filing IFR.
Under an SVFR clearance, the minimums relax to 1 statute mile visibility and remaining clear of clouds. You must request it from ATC (it's never automatic), and ATC will issue it only if traffic permits — IFR traffic always takes priority, so you may have to wait.
Important limitations:
- At night, SVFR requires the pilot to be instrument-rated and the aircraft to be IFR-equipped — a recognition that maneuvering at 1 mile in the dark is genuinely dangerous.
- Some of the busiest Class B airports prohibit SVFR entirely (look for "No SVFR" on the chart).
- SVFR only covers the surface area; once you leave it you must have the normal VFR minimums for the airspace you enter.
SVFR is a useful tool for getting in or out of a field under a low marine layer, but it puts you close to clouds and terrain with thin margins. Use it deliberately, not as a way to push marginal weather.
*Reference and training only. Consult the FAA AIM and current regulations.*