The Federal Aviation Administration is investigating the death of a skydiving coach after separating from a student in a jump in Nashville, Tennessee.

During Saturday’s jump, coach Justin Fuller “assumed there was no parachute” “falling off the sky.”

Fuller, 35, appears to have been separated from his client and tandem rig that connects the two during the jump and includes a parachute.

A few hours later, a police helicopter found Fuller’s body in a wooded area. The Nashville Fire Department used several ladders to reach the 46-year-old client who survived hours of being trapped in an emergency parachute.

Police said the other three dives were conducted near John C Tarn Airport in Nashville and were successfully completed before the deadly collapse. The plane they jumped landed safely, too.

It is unclear how experienced skydiver Mr. Fuller separates from the safety equipment.

A man who helped rescuers fire crews tell locals TV station WSMV “This is his first jump, and it will be his last one,” said the client rescued by authorities.

Fuller recently wrote about his passion for teaching others how to skydiving.

“In my opinion, teaching people to skydivers has always been the most meaningful job,” Fuller said in an Instagram post in June.

“It’s always a heart-warming moment to watch them figure it out and start flying. Sometimes it gets a little hectic when you first let someone go.”

That same month, he posted photos of the wreckage, saying the plane’s engine had malfunctioned after takeoff. All 20 people on board survived.