Divers have found the cockpit voice recorder from the Lion Air flight which crashed off Indonesia in October.
Divers had already found the flight data recorder back in November.
It showed the pilots had fought to override a safety system which kept pulling the plane’s nose down.
But the cockpit voice recorder will reveal what pilots were saying and why the safety feature was not turned off.
All 189 people on the flight were killed.
(This story was originally published on January 14, 2019)