weather servicesFAA-published question bank (Private Pilot, 2008)
For aviation purposes, ceiling is defined as the height above the Earth's surface of the
A
lowest reported obscuration and the highest layer of clouds reported as overcast.
B
lowest broken or overcast layer or vertical visibility into an obscuration.✓ Correct Answer
C
lowest layer of clouds reported as scattered, broken, or thin.
Explanation
14 CFR 1.1 defines ceiling as the height above the earth's surface of the lowest layer of clouds or obscuring phenomena reported as broken, overcast or obscuration, and not classified as thin or partial. A scattered or thin layer is not a ceiling, and the highest overcast layer is irrelevant.
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