Distance from cloud. Flight Visibility
Horizontal Vertical -
At and above FL100
Class B airspace clear of cloud - 8 km
Class C, D, E, F and G airspace. 1500m 1000ft. 8 km
Below FL100
Class C, D, E, F, and G airspace. Clear of cloud and in sight of the surface 5 km
alternatively
At or below 3000 ft.
Class F and G airspace Clear of cloud and in sight of the surface 5 km
For fixed wing aircraft flying at 140kt or less
Class C, D and E airspace Clear of cloud and in sight of the surface 5 km
Class F and G airspace Clear of cloud and in sight of the surface 1500m
For helicopters
Class C, D and E airspace Clear of cloud and in sight of the surface -
Class F and G airspace Clear of cloud and in sight of the surface Compatible with speed
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