An Indonesian Lion Air jet that plunged into the Java Sea last week, killing all 189 on board, had an air speed indicator problem on its fatal flight and on three previous journeys, the Agence-France Presse reported on Monday, quoting the country’s transport watchdog said. Previously on Friday, Indonesia’s transport ministry said that it had found faults in two other Boeing 737-MAX 8 jets owned by Lion Air and Garuda. The faults include a cockpit indicator display problem which an analyst said may be similar to one reported in the crashed Lion Air Jet, according to SBS News. Judging from erratic flight speed of the ill-fated Lion Air jet, experts have speculated a problem with the aircraft’s pitot tubes, which are essential to calculate airspeed and altitude.