3D Printable Shell of an Aircraft Black Box
This model is a shell of an aircraft Black Box scanned via 3D scanner.
Aircraft Black Box is officially called flight data recorder (FDR), is an electronic device that records any instructions sent to any electronic systems on an aircraft. It is a device used to record specific aircraft performance parameters. If you are not in the aviation business, you may have heard about it in Air Crash Investigation documentaries.
I don't know what was the aircraft that this FDR was part of.