What advantage does a PAPI provide to pilots during approach?

A Precision Approach Path Indicator (PAPI) is an essential visual aid for pilots during the approach phase of landing. It serves to provide visual guidance for altitude control by projecting a series of lights that indicate whether an aircraft is on the correct glide slope to land safely.

When pilots approach the runway, the PAPI lights display a combination of red and white colors. If the aircraft is above the ideal glide slope, more white lights will be visible, indicating the need to descend. Conversely, if the aircraft is below the glide slope, more red lights will be visible, signaling the pilot to climb. This visual guidance helps pilots maintain a safe and accurate approach angle, ultimately enhancing the safety and efficiency of landings.

By utilizing the PAPI system, pilots can improve their situational awareness and make real-time adjustments to ensure they are approaching the runway at the proper altitude, which is crucial for safe landings.