Domanda 72, Operational Procedures - ATPL - Airline Transport Pilot license

For conducted VFR flights in airspace F, vertical distance from clouds is 250 m at least
For conducted VFR flights in airspace B, horizontal distance from clouds is 1 000 m at least
For conducted VFR flights in airspace E, flight visibility at and above 3 050 m. (10 000 ft) is 5 km at least (clear of cloud)
Special VFR flights are not commenced when visibility is less than 3 km