Investigators of the Lion Air Flight 610, that crashed recently, have confirmed that the airspeed indicator of the aircraft had malfunctioned during its last four flights.

The investigators discovered the fault after analysing the flight data recorder (FDR) of the plane which plunged into the Java Sea minutes after taking off from Jakarta on October 29 with 189 people on board, CNN reported, while quoting sources.

"We are formulating with Indonesia's National Transportation Safety Committee (NTSB) and Boeing for detailed inspections regarding the airspeed indicator," said Soerjanto Tjahjono, head of the NTSB in Jakarta.

Boeing, the manufacturer of the 737 MAX 8, along with six black box experts from four different countries, are at present analysing the flight data recorder in Indonesia.

The first part of the black box of the doomed plane, recovered on November 1, revealed that it had performed 19 flights in total including its final flight scheduled from Jakarta to Sumatra.

The team is still searching for the cockpit voice recorder (CVR) and the second flight recorder devices.

The black box is an important source for retrieving information linked to the mystery behind the crash of brand new Boeing 737 Max 8 jet in clear weather conditions.

(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)