The cockpit voice recorder from an Indonesian Lion Air jet that crashed in October has been recovered, officials said Monday, a discovery that could be critical to explaining why a brand new plane fell out of the sky just after take-off. The Boeing 737 MAX vanished from radar about 13 minutes after departing Jakarta, slamming into the Java Sea moments after pilots had asked to return to the capital and killing all 189 people onboard. The bright orange voice recorder was discovered early Monday about 10 metres from a flight data recorder that was located back in November, authorities said.