The black box, technically known as the flight data recorder, is expected to play a vital role in uncovering the cause of the disaster.
It contains crucial information such as flight speed, altitude, engine performance, and cockpit audio, including communications between the pilots and air traffic control.
These specialised devices are built to withstand the extreme temperatures, water, and severe impact, ensuring the survival of key data even under the catastrophic conditions.
The black box is typically painted bright orange to make it easier to locate amid the wreckage.