Ceiling

Definitions

• The height above the earth’s surface of the lowest layer of clouds, which is reported as broken or overcast, or the vertical visibility into an obscuration.
• means the height above the earth's surface of the lowest layer of clouds or obscuring phenomena that is reported as “broken”, “overcast”, or “obscuration”, and not classified as “thin” or “partial”

References

• 14 C.F.R. Part 1, Federal Aviation Administration, 2026
• Pilot's Handbook of Aeronautical Knowledge, Federal Aviation Administration, 2023