Air Traffic Control (ATC) audio from Wednesday’s collision ... Both the helicopter and the plane crashed in the river... he approached into Runway 33," she says. "All runways are closed.

"We know that air traffic control confirmed with the helicopter crew that they had visual contact with the plane. Controllers then instructed the helicopter to move behind the plane," he added.

Air traffic control communications reveal the moments ... which will assist with the probe. Aboard the plane was one pediatric patient, the child's mother and four crew members, Jet Rescue Air ...