A flight recorder, commonly known as a black box, is a device installed in aircraft to record flight data and cockpit audio. It helps investigators understand the circumstances surrounding an aviation incident or accident. The flight data recorder captures information such as altitude, speed, and heading, while the cockpit voice recorder records conversations and sounds in the cockpit. These devices are designed to withstand extreme conditions, including high impact and intense heat, ensuring that crucial information is preserved. After an incident, investigators analyze the data from the flight recorder to improve aviation safety and prevent future accidents involving aircraft.