To crack the mystery of the plane crash, the black box is absolutely crucial!
Of course.
The black box on the plane is actually not black.
On the contrary, for ease of identification and searching at the crash site, they are usually bright orange.
It's just that since it's bad luck—each time this item is sought, it implies a plane has gone down—thus it was named the black box.
A typical commercial airliner generally has two.
One is the FDR, Flight Data Recorder, which is responsible for recording various data during the plane's operation in real-time, such as heading, speed, altitude, etc. After a crash, the relevant data can be read to understand the plane's status before it went down.
The other is the CVR, Cockpit Voice Recorder, which records the conversations within the last half-hour between pilots in the cockpit and between pilots and air traffic controllers.
