Which term describes weather conditions requiring flight by instruments?

Which term describes weather conditions requiring flight by instruments?

• A. VMC
• B. IMC
• C. VFR
• D. WAS

Answer: (B)

Instrument meteorological conditions describe weather that forces you to fly by reference to cockpit instruments rather than outside visual cues. When ceilings are low or visibility is poor due to clouds, fog, rain, or snow, pilots can’t reliably see the horizon or terrain, so they rely on instruments to maintain attitude, altitude, and navigation and operate under instrument flight rules. In contrast, Visual Meteorological Conditions are clear enough for pilots to navigate by sight and use Visual Flight Rules. The option that isn’t a standard weather term isn’t applicable here.

Instrument meteorological conditions describe weather that forces you to fly by reference to cockpit instruments rather than outside visual cues. When ceilings are low or visibility is poor due to clouds, fog, rain, or snow, pilots can’t reliably see the horizon or terrain, so they rely on instruments to maintain attitude, altitude, and navigation and operate under instrument flight rules. In contrast, Visual Meteorological Conditions are clear enough for pilots to navigate by sight and use Visual Flight Rules. The option that isn’t a standard weather term isn’t applicable here.