Investigators said Monday they have recovered the cockpit voice recorder from a business jet that plummeted from the sky amid severe weather in Florida last week, killing all nine people on board.

The recorder was found at the site where the Bahamas-bound Learjet slammed into the ground and erupted in a fireball Nov. 1, the National Transportation Safety Board said in a statement posted to social media.

If data from the device can be recovered, it could provide crucial details about what the pilots said to each other as they encountered turbulence, ice formed on the wings and they lost control of the aircraft.

It was not immediately known if the recorder had been damaged or if it was working in the first place.…