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Page Title:
Figure 4-1. Cloud Separations and Visibilities |
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|  INSTRUMENT FLIGHT RULES WORKBOOK
CHAPTER FOUR
AIRSPACE
FLIGHT VISIBILITY
DISTANCE FROM CLOUDS
CLASS A
NOT APPLICABLE
NOT APPLICABLE
CLASS B
3 STATUTE MILES
CLEAR OF CLOUDS
CLASS C
3 STATUTE MILES
500 FEET BELOW
1000 FEET ABOVE
2000 FEET HORIZONTAL
CLASS D
3 STATUTE MILES
500 FEET BELOW
1000 FEET ABOVE
2000 FEET HORIZONTAL
CLASS E
500 FEET BELOW
LESS THAN 10,000 FEET
3 STATUTE MILES
1000 FEET ABOVE
MSL
2000 FEET HORIZONTAL
AT OR ABOVE 10,000 MSL
5 STATUTE MILES
1000 FEET BELOW
1000 FEET ABOVE
1 STATUTE MILE
HORIZONTAL
CLASS G
1200 FEET OR LESS
ABOVE THE SURFACE
(REGARDLESS OF MSL
ALTITUDE)
DAY, EXCEPT AS
1 STATUTE MILES
CLEAR OF CLOUDS
PROVIDED IN
91.155 (b)
NIGHT, EXCEPT
3 STATUTE MILES
500 FEET BELOW
AS PROVIDED IN
1000 FEET ABOVE
91.155(b)
2000 FEET HORIZONTAL
MORE THAN 1,200 FEET
ABOVE THE SURFACE
BUT LESS THAN 10,000
FEET MSL.
DAY
1 STATUTE MILES
500 FEET BELOW
1000 FEET ABOVE
2000 FEET HORIZONTAL
NIGHT
3 STATUTE MILES
500 FEET BELOW
1000 FEET ABOVE
2000 FEET HORIZONTAL
MORE THAN 1,200 FEET
ABOVE THE SURFACE
5 STATUTE MILES
1000 FEET BELOW
AND AT OR ABOVE 10,000
1000 FEET ABOVE
FEET MSL
1 STATUTE MILE
HORIZONTAL
Figure 4-1 Cloud Separations and Visibilities
INSTRUMENT FLIGHT RULES 4-3
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