Which VFR operation allows an IFR aircraft to operate in VFR conditions at any appropriate altitude?

• A. VFR on top
• B. VFR over the top
• C. VFR terminal area chart
• D. VOR

Answer: (A)

VFR-on-top is the option that lets an IFR flight operate in VFR conditions by choosing an altitude that places the aircraft above the weather layer, while remaining in controlled airspace under IFR clearance. The pilot must stay clear of clouds and meet the required VFR visibility and cloud clearance for the airspace, effectively flying at an altitude where the weather is beneath or removed from the aircraft. This lets the airplane continue its IFR flight plan while exploiting clear, visual conditions at an appropriate altitude above the weather.

The other terms don’t describe this operation: “VFR over the top” isn’t the standard term used for this concept, a terminal area chart refers to a type of chart, and a VOR is a navigation aid.