After completing three successful jumps, he opted to use his second parachute system after noticing kinks in the rigging lines of the first.
A report has revealed that the final jump started without incident and Sergeant Fisk was the last skydiver to jump out of a Cessna jet.
She filmed one of the tandem couples freefalling until they reached an altitude of around 5,000 feet, when they deployed their parachute.
Sergeant Fisk then continued to fall further and was “showing a small amount of body movement” when the ground came into view.
He then looked up seconds before his death, revealing that his reserve parachute had become entangled and could not deploy.
The last frame was taken 0.034 seconds before impact.
It was first assumed that it had landed safely, but emergency services were subsequently called when it could not be located.
A passenger in a taxi on the M40 called 999 at 5:30pm and reported that he had “seen someone fall out of the sky”, according to the Mail on Sunday. Sergeant Fisk’s body was located at 6:08 p.m.
The report found that Sergeant Fisk’s parachute failed due to air turbulence produced by his body. He added that his non-RAF status may have contributed to the tragedy.
Sergeant Fisk, from Nuneaton in Warwickshire, joined the RAF in 2011 and served at RAF Wittering and RAF College Cranwell, before being selected as a parachute instructor at RAF Brize Norton, the force’s top training school.
In 2020, he moved to RAF Weston-on-the-Green.
‘She lived her life with joy and consideration’
Commenting on the tragedy, Sergeant Fisk’s family said: “It is with great sadness that we mourn the death of our beloved daughter, Rachel.
“He lived his life with joy and consideration for others and loved his chosen career. Many people will miss Rachel.”
The RAF said: “Our thoughts remain with the family of Sergeant Fisk. The investigation into this tragic accident is now complete and we will carefully consider the recommendations and take any necessary action.
“He lived life with joy and loved his career.”
The Defense Security Authority Service report, seen by The Telegraph, said: “The only reason the panel was able to reach its conclusions as stated in the report was due to data drawn from various sources of digital data, including the GoProTM camera used by Sergeant Fisk during the descent.
“Without this information, the investigation would have been based solely on the images captured at the scene after the accident. The panel acknowledged that it would likely have reached very different conclusions based on this information alone.”
RAF Weston-on-the-Green was a World War I era airfield used for parachute and military training activities.