The black box has been found. On the rooftop of a hostel in Ahmedabad — the very building where Air India Flight AI-171 crashed — a vital clue to solving this aviation tragedy has emerged. Authorities have now confirmed: the DFDR, or Digital Flight Data Recorder, was recovered from that rooftop. It’s commonly known as the “black box.” But here’s the thing — the black box isn’t black. And it’s not just one box. So, what exactly is it? And why does everyone talk about it after every crash? Take a look.