UPDATE: The National Transportation Safety Board releases a preliminary report of the plane crash that claimed the lives of two people in January. 

In the preliminary report, a witness is stated to have seen the aircraft take a "tight U-turn at a low altitude, about two or three treetop lengths above water..." 

Moments later, the unidentified witness told NTSB that the plane spiraled down towards the lake, that's when he contacted emergency officials. 

After the multiple day search for the plane, the report states that only the airframe was recovered; the engine and propeller were not recovered. 

However, a Go-Pro camera was attached to the plane. Footage from that camera is still being examined at the NTSB Vehicle Recorders Division in Washington, D.C. 

While these investigations are being conducted, the NTSB has not traveled to Chickamauga Lake. 

Here is the full preliminary report from the NTSB:

Stay with the WRCB app for updates to this story. 

PREVIOUS STORY: Over the last few days, Hamilton County crews searched Chickamauga Lake with side-scan sonar for the plane that crashed earlier this week.

Once they located the aircraft Thursday, divers determined a plan to get it removed.

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“Divers will go down to assess the wreckage looking for structural integrity that is there with the aircraft," Matt Lea, with the Hamilton County Sheriff's Office said, said. “Then trying to figure out the best way to put attachment points to bring the aircraft to the surface.”

Actual removal of the aircraft from the lake is conducted by private contractors.

Those contractors work in partnership with the victims’ insurance company, which is responsible for insuring the aircraft.

“It is a part of the recovery effort. That's machinery, diving equipment, things of that nature that the contractors will be using to assess the damage,” Lea said. “Hopefully, at some point in the near future lift the aircraft with help from a barge of some sort or a crane.”

The aircraft will be placed in a secure location that was approved by the National Transportation Safety Board (NTSB.)

The investigation will continue once the government shutdown is over and NTSB and FAA can finish collecting the evidence.

“It's important to have the instruments to examine and look at the control board,” former NTSB Chairman Jim Hall said.