Lion Air Flight 610 was intact with its engines running when it crashed at high speed into the Java Sea, the head of Indonesia's National Transportation Safety Committee said Monday.

Soerjanto Tjahjono said that due to the small size of the debris found and loss of the plane's engine blades, investigators determined that Flight 610 did not explode in the air, but was in "good shape" before it crashed 13 minutes after takeoff on Monday, October 29.

Speaking with victims' families on Monday in Jakarta, Soerjanto said there was a technical problem with the brand new Boeing 737 MAX 8 aircraft on the day of the crash. He did not provide further details about the problem.

Authorities previously confirmed that the pilots flying the same plane on another route the day before the crash had experienced technical issues.

A remotely operated underwater vehicle is prepared for a dive in search of Flight 610's cockpit voice recorder.

The confirmation of Flight 610's condition comes as divers continue to search for the aircraft's missing cockpit voice recorder (CVR), commonly known as a black box, which could help investigators piece together the plane's final moments before it crashed, killing all 189 people on board.

Locating the cockpit voice recorder

The head of Indonesia's Search and Rescue Agency, Basarnas, said Sunday that after initially hearing a "ping" from the CVR on Saturday, diving teams could no longer hear a signal from the device.

"We checked that spot, located around 50 meters from the location of finding the first black box. But we can't find the CVR yet," Muhammad Syaugi said.

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

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