← All explained questions · Airspace and Operating Requirements
In Class D airspace below 10,000 feet MSL, what cloud clearance is required?
Choices
Clear of clouds
Clear-of-clouds applies to Class B and low Class G, not Class D.
✓ 500 ft below, 1,000 ft above, 2,000 ft horizontalcorrect
This "3-152" rule applies to Class C, D, and E below 10,000 MSL.
1,000 ft below, 1,000 ft above, 1 SM horizontal
That set applies above 10,000 MSL.
No cloud clearance is required
Cloud clearance is always required under VFR in controlled airspace.
Why
Class C, D, and E below 10,000 feet MSL require 500 feet below, 1,000 feet above, and 2,000 feet horizontal from clouds, with 3 SM visibility.
FAA source: 14 CFR 91.155browse the reference library →
Original study question written for this course — representative of FAA knowledge-test topics, not an actual current FAA exam question.