Associated Incidents
(CNN) Problems were reported on a Lion Air jet that crashed into the sea off Jakarta even after technicians replaced a sensor on board the aircraft, investigators said.
Indonesian authorities confirmed Wednesday that the angle of attack (AOA) sensor was replaced after a flight from Manado, in North Sulawesi to Denpasar, Bali on October 28. The Boeing 737 MAX 8 then made another flight to Jakarta that same day, and the pilots reported further problems.
All 189 people on board Flight 610 died when the new Boeing 737 MAX 8 crashed into the sea on October 29, 13 minutes after taking off from Jakarta on a short flight to Pangkal Pinang on the Indonesian island of Bangka.
Investigators said the jet experienced problems on its last four flights -- including, crucially, the flight that crashed, according to Soerjanto Tjahjono, the head of the National Transportation Safety Committee (KNKT).
Boeing released an operational bulletin on Wednesday, warning all airlines about how to address any erroneous readings related to the AOA sensor. The Federal Aviation Administration (FAA) later issued its own directive that advised pilots about how to respond to similar problems.
Search for voice recorder
Almost two weeks after the crash, authorities are still searching for the plane's cockpit voice recorder (CVR), which is believed to be buried under deep mud. If found, it should reveal what happened in the cockpit in the final seconds of the flight.
Investigators are already examining the flight data recorder that was pulled off the sea bed, some 30 meters under water, on November 1.
Photos: In photos: Lion Air plane crashes off Indonesia A relative of one of the crash victims tosses flower petals from an Indonesian Navy ship on Tuesday, November 6. Hide Caption 1 of 27 Photos: In photos: Lion Air plane crashes off Indonesia Victims' families and colleagues react on a Navy ship as they're ferried to the crash site on November 6. Hide Caption 2 of 27 Photos: In photos: Lion Air plane crashes off Indonesia An Indonesian official examines a turbine engine from the plane on Sunday, November 4. Hide Caption 3 of 27 Photos: In photos: Lion Air plane crashes off Indonesia People in Jakarta grieve over the coffin of a relative on November 4. Hide Caption 4 of 27 Photos: In photos: Lion Air plane crashes off Indonesia Indonesian Navy divers recover a flight data recorder on Thursday, November 1. Hide Caption 5 of 27 Photos: In photos: Lion Air plane crashes off Indonesia Families of the victims look through personal items that were recovered from the wreckage. Hide Caption 6 of 27 Photos: In photos: Lion Air plane crashes off Indonesia A police officer arranges shoes recovered during search operations. Hide Caption 7 of 27 Photos: In photos: Lion Air plane crashes off Indonesia A Navy ship arrives at a search area in the waters of Karawang. Hide Caption 8 of 27 Photos: In photos: Lion Air plane crashes off Indonesia A relative of a passenger cries at a Jakarta hospital on Tuesday, October 30. Family members have been providing authorities with DNA samples to help identify victims of the crash. Hide Caption 9 of 27 Photos: In photos: Lion Air plane crashes off Indonesia Officials transport a body bag in Jakarta. Hide Caption 10 of 27 Photos: In photos: Lion Air plane crashes off Indonesia Indonesian President Joko Widodo inspects debris. Hide Caption 11 of 27 Photos: In photos: Lion Air plane crashes off Indonesia Victims' relatives embrace at a police hospital in Jakarta. Hide Caption 12 of 27 Photos: In photos: Lion Air plane crashes off Indonesia Soldiers drag ashore an inflatable raft containing debris from the plane. Hide Caption 13 of 27 Photos: In photos: Lion Air plane crashes off Indonesia A wallet is seen in the water where the plane went down. Hide Caption 14 of 27 Photos: In photos: Lion Air plane crashes off Indonesia A relative of a passenger cries at a hospital in Jakarta. Hide Caption 15 of 27 Photos: In photos: Lion Air plane crashes off Indonesia President Widodo (front row, second from right) tours the operations center in Jakarta where debris is laid out. Hide Caption 16 of 27 Photos: In photos: Lion Air plane crashes off Indonesia Police work to identify personal belongings that are believed to be from the plane's wreckage. Hide Caption 17 of 27 Photos: In photos: Lion Air plane crashes off Indonesia A police officer studies a map in the search-and-rescue command center. Hide Caption 18 of 27 Photos: In photos: Lion Air plane crashes off Indonesia A diver with the Indonesian Navy enters the water off the north coast of Karawang. Hide Caption 19 of 27 Photos: In photos: Lion Air plane crashes off Indonesia Rescue workers carry a body that was recovered from the waters near Jakarta on October 29. Hide Caption 20 of 27 Photos: In photos: Lion Air plane crashes off Indonesia A woman in Pangkal Pinang prays as she and others wait for news on October 29. Hide Caption 21 of 27 Photos: In photos: Lion Air plane crashes off