BANGKOK — Almost three months after Sriwijaya Air Flight 182 crashed into the Java Sea, Indonesian officers introduced Wednesday that they’d recovered the reminiscence module of the plane’s cockpit voice recorder by pumping up mud and sand from the seafloor.

The essential reminiscence unit, which apparently broke free from the cockpit voice recorder on impression, may reveal the ultimate phrases of the pilot and co-pilot because the Boeing 737-500 plummeted into the ocean on Jan. 9.

The module was recovered Tuesday night time and delivered to shore Wednesday by a Coast Guard ship. Officers mentioned they believed the module was nonetheless practical and that it might take three days to every week to obtain and browse its knowledge.

The plane crashed minutes after taking off from Soekarno-Hatta Worldwide Airport close to Jakarta, the Indonesian capital, killing all 62 folks aboard, together with six lively crew members.

The cockpit voice recorder is one among two so-called black packing containers carried by business plane that report flight knowledge and voice communications. The info recorder, which information details about the jet’s mechanical operation, was recovered three days after the crash.

Divers looking in waters about 60 toes deep initially discovered the damaged casing of the cockpit voice recorder. However its essential reminiscence module, which information such sounds as engine noises and cockpit conversations, remained elusive.

In a search hampered by tough climate and poor visibility, divers tried for six weeks to find the unit with out success. Officers tried varied different strategies after which introduced in a dredging ship final week to pump up mud and sand from the seafloor.

After about eight days of sifting by means of it, crews lastly discovered the module. They’d deliberate to halt operations with the dredging ship on Tuesday if they’d not discovered the machine by then.

“There’s a mud sucker that works like a vacuum cleaner,” mentioned Soerjanto Tjahjono, chief of the Nationwide Transportation Security Committee. “We extracted the mud down to at least one meter deep. Final night time, when it was the final night time of the search, we discovered it.”

A preliminary crash investigation by the committee, which was based mostly partly on data from the information recorder and upkeep information, concluded final month {that a} difference in the level of thrust between the airplane’s two engines may need contributed to the plane rolling over earlier than it plunged into the ocean.

A distinction within the stage of thrust — the drive of the engines that propels the plane ahead — could make planes tough to manage, however it’s unclear why that downside could have occurred throughout the Sriwijaya flight.

Officers hope that the recovered reminiscence module will shed some gentle on why the pilot and co-pilot have been unable to get better management of the airplane, which plummeted greater than 10,000 toes in lower than a minute.

“With out the cockpit voice recorder, it might be very tough to know the trigger on this Sriwijaya 182 case,” Mr. Soerjanto mentioned.

The Sriwijaya plane was the third to crash into the Java Sea in simply over six years after departing from airports on Java, one among Indonesia’s 5 foremost islands.

In December 2014, Air Asia Flight 8501 crashed into the Java Sea off the coast of Borneo with 162 folks aboard because it flew from the Indonesian metropolis of Surabaya to Singapore. Investigators finally attributed the catastrophe to the failure of a key part on the Airbus A320-200 and an improper response by the flight crew.

And in October 2018, Lion Air Flight 610 nose-dived into the Java Sea northeast of Jakarta minutes after taking off for Pangkal Pinang with 189 aboard. Investigators concluded that the anti-stall system malfunctioned on the Boeing 737 Max, a more moderen mannequin than the Boeing that crashed in January.