GTA Online The Black Box File is one of the new missions added with the Agents of Sabotage update. It becomes available after you purchase a new business that was also added recently with the DLC.

Investigators have recovered the so-called black boxes from an American Airlines Bombardier CRJ-700 regional jet, which ...

What is a black box? The term black box is a bit of a misnomer. Those boxes are actually orange, so they are easier to spot.