Which aviation condition requires a ceiling of 1000 feet and visibility of 3 miles or better?

• A. IMC
• B. VFR
• C. VMC
• D. WAS

Answer: (C)

Understanding how ceiling and visibility define weather categories is key. When the ceiling is 1000 feet AGL and visibility is 3 miles or better, the conditions meet what pilots call Visual Meteorological Conditions. That means there is enough weather to maintain visual reference to the ground and other objects, so flight can be conducted under Visual Flight Rules. If either the ceiling drops below 1000 feet or the visibility falls below 3 miles, conditions become Instrument Meteorological Conditions, requiring flight by instruments (IFR). The term associated with flight rules under these good-weather conditions is VFR, but the question is about the weather category itself, which in this case is Visual Meteorological Conditions. The other option isn’t a recognized weather category for this threshold, and WAS isn’t a standard aviation term for weather conditions.