Which acronym refers to VFR on Top?

The acronym that refers to VFR on Top is OTP. VFR on Top is a term used in aviation that describes a situation where an aircraft is flying under visual flight rules (VFR) at an altitude that is above an overcast cloud layer, allowing the pilot to maintain visual reference with the ground while also complying with air traffic control regulations and instrument flight rules (IFR) when necessary.

Understanding this acronym is essential for pilots, as it indicates a specific condition under which they can operate their aircraft safely while still benefiting from visual references. In this context, the term emphasizes the importance of adhering to visual flight rules while flying above clouds that would otherwise require flying under instrument flight rules. Knowing this terminology enhances pilots' communication with air traffic control and improves overall situational awareness.