Lion Air crash: The airspeed indicator does not work properly for the last four flights

Researchers who analyzed the flight data recorder after the October 29 crash revealed the error, the committee said. The finding is the first technical problem revealed in the investigation of why the plane crashed.

"We are planning detailed inspections of the airspeed with NTSB and Boeing," said Soerjanto Tjahjono, head of the committee.

"We found a malfunction in an airspeed instrument on the last four flights, including a crash flight," Capt Nurcahyo Utomo of the National Transportation Safety Commission (CNN) said on Monday. "We ask NTSB and Boeing to work on it to prevent the same accident happening in the future."

Utomo confirmed to CNN that there were two air speed indicators in the cockpit. "One belongs to the governor and one is the second governor, one of whom should have reacted to the dysfunction of the air velocity display on his screen," said Nurcahyo, confirming that the jet was in control of the pilot.

Boeing, the manufacturer of 737 MAX 8 analysts and US carriers at NTSB, worked with Indonesian experts to analyze the flight data recorder in Indonesia.

Boeing did not respond to a request for a comment from CNN. Lion Air declined to comment.

The plane was intact when crashed, researchers say

The Lion Air 610 was intact with its engines running when it crashed at high speed in the Java Sea, Tjahjono said on Monday.

Tjahjono said that due to the small size of the fragments found and the loss of airplane blades, the researchers found that Flight 610 had not exploded in the air but was in good condition before colliding 13 minutes after takeoff.

Speaking to the families of the victims in Jakarta, Soerjanto said there was a technical problem with the new Boeing 737 MAX 8 aircraft on the day of the crash. He did not give more details about the problem.

The authorities confirmed that pilots flying on the same plane on another route the day before the crash encountered technical problems.

The confirmation of Flight 610 status comes as divers continuing to look for the missing aircraft plane (CVR), known as the black box, which could help researchers cope with the final moments of the aircraft before it collapses.

A submarine remote-controlled car is ready to search for the Flight 610 cockpit voice recorder.

Detect the cockpit voice recorder

The head of Indonesia's research and rescue organization, Basarnas, said on Sunday that after the initial hearing of a ping from CVR on Saturday, dive teams could no longer hear a signal from the device.

Lion Air crash: The divers find the main fuselage, they hear the signal from the missing black box, officials say

"We have checked this point, which is about 50 meters from the position of the first black box but we can not find the CVR yet," said Muhammad Syaugi.

Meanwhile, the other airplane black box, the flight data recorder, was on Thursday, and researchers said it showed that Flight 610 had performed 19 flights – including the last flight.

Six black box experts from four different countries are now analyzing the flight data recorder to work together in the last moments of 737 before it collapses.

Syaugi said the search business has expanded and will continue until Wednesday.

The focus of ongoing efforts will be to recover extra victim remains and find the CVR, he said.

Analysts say finding the cockpit voice recorder is imperative if researchers have to determine if the conflict has implications for other airlines that operate collectively thousands of Boeing 737 flights everywhere on a daily basis.

Lion Air JT 610's ill-fated flight data recorder was recovered by Java Sea on Thursday.

The pilot mentioned the planes

"After 10 minutes in the air, the plane dropped as if losing power, people panicked, fell about 400 feet," said Garachu adding that he had confirmed the height of the drop on a flight tracking site. He said the fall felt like falling into "a really, really deep hole."

Lion Air confirmed to CNN that the same aircraft was being used on this route and the Indonesian authorities confirmed that the flight operator reported a problem with one of the aircraft's instruments.

Daniel Putut Kuncoro Adi, Lion Group CEO, said that all the information was sent to Indonesia's National Transportation Security Committee and could not answer any question about the error because an agreement on non-dissemination of information was signed.

Rapid traffic streams and muddy waters in the Java Sea crash area have blocked recovery efforts since the plane arrived.

On Saturday, Syaugi confirmed that one of the more than 100 divers who participated in the investigation had died.

Syahrul Anto, 48, was unconscious on Friday after his dive partner found he had disappeared, Syaugi said. He was immediately brought back to the shore and attended by doctors, but Syaugi said that "God had a different plan."

Indonesian navy looking for the victims and the fuselage of Lion Air Flight 610 Sunday.

Anto was a skilled, senior diver "who devoted his life to our country," said Syaugi.

Syaugi, who is in charge of the diving team, said the participants were "well-trained divers, great divers, with great experience, coming from special Navy teams, from the police, from the Basarnas team, and some are volunteers from the diving club ".

Masrur Jamaluddin reported from Jakarta. Chandler Thornton, Helen Regan, Jo Shelley, Alex Stambaugh and CNN's Ivan Watson contributed to this report.