Flight data recorder

A flight data recorder was a device installed in starships and starfighters to record flight data. They were an invaluable resource for determining the capacities of a particular starship. In 1 BBY, during a mission to the planet Lothal, Ezra Bridger and Sabine Wren stole the flight data recorder of a prototype TIE/D Defender Elite so that the Rebel Alliance would know the capabilities of the highly advanced fighter.