What does PAPI stand for in aviation?

PAPI stands for Precision Approach Path Indicator. This system consists of a series of lights arranged in a specific configuration to provide visual guidance to pilots during the approach and landing phase of flight. The lights indicate whether the aircraft is above, below, or on the correct glide path, which is crucial for safely landing the aircraft.

The term "precision" is key here, as it signifies that the PAPI system delivers accurate information about the approach angle, ensuring that pilots can make the necessary adjustments to maintain a safe flight path. This visual aid is particularly important in various conditions and helps improve landing safety and efficiency. Understanding PAPI is essential for pilots, as it directly relates to the final phases of a flight where proper descent angles are critical for safe operations.