Special VFR (SVFR)

Definition

Special VFR (SVFR) is a special clearance that allows an aircraft to operate within a control zone (CTR) under Visual Flight Rules, even when the weather is below standard VFR minima. SVFR is available only upon request and subject to ATC approval. It is typically used for departures or arrivals at controlled aerodromes when weather conditions are marginal.

Purpose

  • Permit VFR operations in marginal weather without switching to IFR
  • Allow aircraft to depart, arrive, or transit a CTR when conditions would otherwise prohibit VFR
  • Provide flexibility while maintaining safety and ATC oversight

Standard VFR vs. Special VFR

ConditionStandard VFRSpecial VFR
Visibility≥ 5 km (above 3000 ft)≥ 1500 m (800 m for helicopters)
Cloud separation1000 ft vertical / 1500 m horizontalClear of cloud, in sight of surface
Clearance requiredIn Class D/E onlyAlways
AirspaceClass C, D, E (VMC required)Only CTR (Class D)

SVFR Requirements

  • Within a control zone (CTR)
  • ATC clearance is mandatory
  • Pilot must request SVFR — it is not issued automatically
  • Aircraft must remain clear of cloud and in sight of the ground
  • Two-way radio communication and position reporting are required
  • Separation from IFR traffic is provided by ATC
  • Transponder use (Mode C/S) typically required

When SVFR Is Used

  • Departing from a CTR airport with low clouds or visibility below VFR minimum
  • Returning to base in deteriorating weather
  • Training flights or repositioning within the CTR
  • Flying helicopters, which benefit from even lower minima

Example SVFR Phraseology

  • “Request Special VFR departure to the north”
  • “Cleared Special VFR, remain clear of cloud, not above 2000 feet, report leaving control zone”
  • “Special VFR approved, maintain VFR at all times, traffic is IFR inbound on final”

Limitations

  • Not available at all airports or during certain high-traffic periods
  • SVFR at night is prohibited in many countries for fixed-wing aircraft
  • Pilots must remain prepared to return or hold if conditions worsen
  • May be refused by ATC due to IFR traffic or safety concerns

SVFR vs. IFR

While IFR offers full ATC guidance, SVFR allows a VFR pilot to retain visual navigation and avoid filing an IFR flight plan. However, SVFR clearance does not guarantee weather suitability — the pilot remains responsible for maintaining visual conditions.

Tips for Pilots

  • ✅ Know the SVFR minima for your aircraft and airport
  • ✅ Request SVFR proactively — don’t wait until denied VFR
  • ✅ Be prepared for a clearance delay due to IFR traffic
  • ✅ Use LearnATC to practice SVFR phraseology and sequencing