(CNN)An off-duty pilot in the cockpit of a Boeing 737 Max 8 jet jumped in to help crew disable a malfunctioning flight-control system as it experienced difficulties in October, according to Bloomberg.
The next day, with a different crew, the same plane crashed into the sea off Jakarta, killing all 189 people on board.
On doomed Lion Air Flight 610, pilots searched in a handbook for a way to stop the plane from nosediving, according to an exclusive Reuters report.
Reuters cites the information from three people with knowledge of the contents of the cockpit voice recorder that has never been made public.
Indonesia’s National Transportation Safety Committee (KNKT) has refused to comment to CNN on the content of the voice recorder as the investigation is still ongoing. Boeing also refused to comment to CNN on the matter Wednesday.
Indonesian authorities found the cockpit voice recorder in the Java Sea on January 14 and said it could take up to a year to publish a full report into the crash.
