An "Instrument Approach" is a procedure used by pilots to land an aircraft in low visibility conditions, such as fog or heavy rain. This approach relies on instruments in the cockpit, allowing pilots to navigate and descend safely to the runway without relying on visual cues. During an instrument approach, pilots follow specific flight paths and altitudes as outlined in the Instrument Flight Rules (IFR). These procedures are designed to ensure safety and precision, often utilizing navigation aids like VORs or ILS systems to guide the aircraft during the landing process.