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The plane involved in Saturday’s disaster did not have the automated flight-control system that played a role in the Lion Air crash and another crash of a 737 MAX 8 jet in Ethiopia five months later, leading to the grounding of the MAX 8 for 20 months. In October 2018, a Boeing 737 MAX 8 jet operated by Lion Air plunged into the Java Sea just minutes after taking off from Jakarta, killing all 189 people on board. Indonesia, the world’s largest archipelago nation, with more than 260 million people, has been plagued by transportation accidents on land, sea and air because of overcrowding on ferries, aging infrastructure and poorly enforced safety standards. but the black boxes were buried under tons of sharp objects of the wreckage,” Margono told reporters Monday afternoon, adding that removing those obstacles had slowed efforts to reach the device. “The current condition and waves are favorable. Yudo Margono said tons of sharp objects of aircraft debris hampered divers trying to reach the black boxes in the sea. The committee is expected to publish a preliminary investigation report of the crash within a month and a final report around a year later.
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He said that Singapore’s Transport Safety Investigation Bureau will help his committee in searching for the black boxes and the United States’ National Transportation Safety Board will join in investigating the crash. Investigators are investigating all parts of the plane found by searchers from the seafloor such as the ground proximity warning system, a device that could warn the pilot if the plane is too close to the ground, a radio altimeter and several other parts mostly from the lower side of the aircraft’s tail, Utomo said. More interviews of witnesses, including with the airlines’ technicians, fishermen and experts, will be done in the near future. Utomo said his team is still examining radar data on the plane’s movements and interviewed the air traffic officers who were in charge of controlling the crashed flight. The committee’s investigator, Nurcahyo Utomo, said they have collected recordings and transcripts of the conversation between the pilot and air traffic controllers as part of their investigation into the cause of the crash. “However, this still has to be confirmed by reading the black boxes.” there is no indication of unnatural destruction or explosion so far,” Tjahjono told The Associated Press. “It was broke apart naturally upon impact with water. The debris was concentrated in one area, while a midair explosion would have caused debris to be spread over a large area, he said. He said the jet was intact when it plunged and it broke into pieces upon the impact with the water. Tjahjono ruled out a possible midair breakup after seeing the condition of the wreckage found by searchers.
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Once the device is found and taken to the investigators' facility, it will take three to five days to dry and clean the device and to download its data, Tjahjono said. The transport committee’s chairman, Soerjanto Tjahjono, said the black boxes could provide valuable information to investigators. Searchers have sent 17 body bags containing human remains to police identification experts who on Monday said they’d identified their first victim, a 29-year-old man, Okky Bisma, a flight attendant. Television footage showed landing gear, wheels and a jet engine among the parts found, while other rescuers brought several body bags containing human remains to a police hospital in eastern Jakarta for the identification process. National Search and Rescue Agency chief Bagus Puruhito said divers using high-tech “ping locator” equipment were looking for an identified target beneath 20 meters (65 feet) of seabed mud. More than a dozen helicopters, 53 navy ships and 20 boats, and 2,600 rescue personnel have been searching since Sunday and have found parts of the plane in the water at a depth of 23 meters (75 feet), leading rescuers to continue searching the area. When found, they will be transported to port and handed to the National Transportation Safety Committee overseeing the crash investigation. The cockpit voice recorder holds conversations between pilots, and the data recorder tracks electronic information such as airspeed, altitude and vertical acceleration.