Any private pilot flying below 10,000 feet can request a special VFR clearance from ATC and, if the clearance is granted, need only stay out of the clouds – no minimum distance is required. The Class C. Class C airspace in the UK extends from Flight Level (FL) 195 (19,500 feet) to FL 600 (60,000 feet). Both IFR and Visual Flight Rules (VFR) flying is permitted in this airspace but pilots require clearance to enter and must comply with ATC instructions. Class D. Class D airspace is for IFR and VFR flying. CLASS C AIRSPACE Appropriate notes as required may be shown. (Mode C see FAR 91.215 /AIM) CLASS D AIRSPACE CLASS E AIRSPACE The limits of Class E airspace shall be shown by narrow vignettes or by the dashed magenta symbol. Individual units of designated airspace are not nec-essarily shown; instead, the aggre-gate lateral and verti-cal limits (a) Except as provided in appendix D, section 3, of this part, special VFR operations may be conducted under the weather minimums and requirements of this section, instead of those contained in § 91.155, below 10,000 feet MSL within the airspace contained by the upward extension of the lateral boundaries of the controlled airspace designated The Class G airspace below 1,200' AGL minimums of 1 mile, clear of clouds still apply. So what about the definition of "flight visibility?" Flight visibility means the average forward horizontal distance, from the cockpit of an aircraft in flight , at which prominent unlighted objects may be seen and identified by day and prominent lighted . IFR is permitted in that same class G, in the clouds as long as the pilot is IFR qualified. If the IFR aircraft is departing, they must have a clearance to enter controlled airspace prior to departure. The IFR clearance applies to class E, and not to class G operation. A pilot was cited with 91.13 careless and reckless by departing into IMC in For example, VFR flights are generally not allowed in Class A airspace, so VFR visibility requirements do not exist for that class of airspace. On the other hand, Class G airspace has four different sets of altitude-dependent minimums. For Class B, C, D, and E airspace below an altitude of 10,000’ MSL, the basic VFR weather minimums are: (b) No person may operate a helicopter under VFR in Class G airspace at an altitude of 1,200 feet or less above the surface or within the lateral boundaries of the surface areas of Class B, Class C, Class D, or Class E airspace designated for an airport unless the visibility is at least— D, or E. It is therefore designated uncontrolled airspace. Class G airspace extends from the surface to the base of the overlying Class E airspace. Although ATC has no authority or responsibility to control air traffic, pilots should remember there are visual flight rules (VFR) minimums that apply to Class G airspace. Special Use Airspace Controlled Airspace. A generic term that covers the different classification of airspace (Class A, Class B, Class C, Class D, and Class E airspace) and defined dimensions within which air traffic control service is provided to IFR flights and to VFR flights in accordance with the airspace classification. (See FIG 3-2-1 .)

class g airspace vfr minimums