Definition
An ATC authorization that allows a pilot to operate under visual flight rules within the surface area of controlled airspace at an airport when the reported weather is below the standard VFR minimums but at or above 1 statute mile visibility and clear of clouds. A specific clearance must be requested from and issued by ATC before entering or departing the airspace.
Plain English
A clearance from ATC that lets you fly visually in or out of an airport's controlled airspace when the weather is too poor for normal VFR but still good enough to see where you're going. You must ask for it, and ATC must approve it.
Context Anchor
Seen in helicopter VFR minimums, especially when a helicopter pilot wants to enter or leave a controlled airport area in weather below normal VFR limits.
Derivation
The word 'special' here means 'granted as an exception.' Standard VFR has fixed weather minimums; SVFR is a special exception to those rules, requested case by case and authorized by ATC.
Why Pilots Care
It lets helicopters continue essential flights safely under ATC supervision instead of being forced to divert or cancel.
Grounding Statement
Special visual flight rule is still flying by sight, but under a specific ATC-approved exception to the normal VFR weather limits.
Intuition Check
Special does not mean “do whatever seems safe.” Here it means a specific FAA exception that requires air traffic control clearance and still has safety limits.
Example Sentence 1
With the ceiling reported at 800 feet, the pilot requested a special VFR clearance from the tower to depart the Class D airspace.
Example Sentence 2
Under special visual flight rule the helicopter maintained one-mile visibility while staying clear of clouds inside the Class D airspace.