One of the most-often busted federal aviation regulations is VFR cloud clearances. That’s because pilots often have a hard time judging how close they really are to clouds. We all know that in Class E airspace below 10,000 feet msl we need at least 3 statute miles of visibility and must remain 500 feet below, 1,000 feet above and 2,000 feet horizontally from clouds.
Judging VFR Cloud Distances
Key Takeaways:
- VFR cloud clearance regulations, particularly horizontal separation, are often violated because pilots struggle to accurately judge their distance from clouds due to visual illusions.
- Pilots can approximate cloud separation by referencing ground landmarks or shadows with a sectional chart, or by converting distance into time based on their aircraft's speed.
- Given the difficulty of exact measurement, pilots should prioritize safety by maintaining a wider berth from clouds than legally required to avoid potential collisions with IFR traffic.
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