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PHOTO: Willy Kurniawan/Reuters
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Family members of the crashed Indonesian Lion Air JT-610 react at Pangkal Pinang airport, in Bangka Belitung province on October 29, 2018. - An Indonesian Lion Air plane carrying 188 passengers and crew crashed into the sea on October 29, 2018, officials said, moments after it had asked to be allowed to return to Jakarta. (Photo by HADI SUTRISNO / AFP)        (Photo credit should read HADI SUTRISNO/AFP/Getty Images)
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Family members of the crashed Indonesian Lion Air JT-610 react at Pangkal Pinang airport, in Bangka Belitung province on October 29, 2018. - An Indonesian Lion Air plane carrying 188 passengers and crew crashed into the sea on October 29, 2018, officials said, moments after it had asked to be allowed to return to Jakarta. (Photo by HADI SUTRISNO / AFP) (Photo credit should read HADI SUTRISNO/AFP/Getty Images)
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(CNN) —  

Indonesia’s national search and rescue agency said it found the crashed Lion Air plane’s landing gear, the wheels and a large part of the body of the aircraft during Thursday’s search.

The discovery of the landing gear comes a day after investigators found the flight data recorder, commonly known as a “black box,” from Lion Air Flight JT610. The discovery should help explain why the new Boeing 737 crashed on Monday, killing all 189 people on board.

Speaking at a news conference at Tanjung Priok port in Jakarta, Muhammad Syauqi said the search agency used another strategy during its operations to try to locate plane parts. The strategy entailed anchoring a ship belonging to an oil company because the vessel was already well-versed in the location. A remotely operated vehicle (ROV) was also used.

Syauqi said divers from the agency, the Navy, and the police were sent to sweep the area. They plan on using a ship crane on Friday to lift up the landing gear debris, Syauqi said.

He said that his team had not heard the ping from the cockpit voice recorder (CVR), which records audio from the cockpit. It is thought to be on the seabed, some 35 meters (114 feet) from the surface.

Early Thursday, CNN Indonesia showed images of divers bringing the flight data recorder, commonly known as a “black box,” on board one of the rescue ships in the sea close to Jakarta.

Monday’s ill-fated flight crashed 13 minutes after takeoff. The flight was supposed to be a one-hour flight to Pangkal Pinang on the island of Bangka.

National Transportation Safety Commission (KNKT) Deputy Director Haryo Satmiko told CNN that it will take two to three weeks to read the data from flight data recorder, and a further two to three months to analyze it.

A photo from Indonesian media agency "detikcom" shows officials displaying part of the ill-fated Lion Air flight JT 610
PHOTO: PRADITA UTAMA/AFP/Getty Images
A photo from Indonesian media agency "detikcom" shows officials displaying part of the ill-fated Lion Air flight JT 610's flight data recorder, after it was recovered from the Java Sea on Thursday, November 1.

Capt. Daniel Putut Kuncoro Adi, managing director of Lion Group, which owns Lion Air as well as other airlines, declined to offer any possible explanations to CNN for the crash.

“As a company we are waiting for the result from the National Transportation Safety Committee working with the black box” to determine what went wrong, Adi said.

Adi said that he knew the pilots on the flight and they “were very funny, very smart, very nice guys.”

He said he believed the pilots did their job “professionally and they struggled to save the aircraft,” and offered his condolences to the families of the victims.

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