A Queensland man's quest to become the oldest person to paraglide from the top of Mount Everest has ended in near tragedy.
Accompanied by QUT filmmaker Joe Carter, Ken Hutt, 62, set off in April and spent weeks at Base Camp preparing to make the long journey to the pinnacle.
However, the glide was not to be — Mr Hutt developed a life-threatening chest infection at camp two, about 6,400 metres up the world's highest mountain.
Mr Carter said Mr Hutt had to turn back.
"Without the ability to breathe properly in an environment where every gram of oxygen inhaled can mean the difference between surviving and death, he had no choice but to descend," Mr Carter said.
One in seven people don't survive their attempts at Everest and three people died while the group was on the mountain.
Mr Hutt's mission was to raise the profile of and money for Rotary International's End Polio Now campaign.
While he failed to achieve his gliding goal, his message made it to the peak, delivered by the three remaining members of the group.
But the journey was not without further emergencies for remaining climbers: two members of the group had to be airlifted to safety on the descent, drilling in the dangers the mountain poses.
'We still managed to succeed with our goal'
Mr Hutt said the mission was not a failure, despite making his way down the mountain in a more conventional way than planned.
"We have already raised more than $250,000 for polio with the expedition, and our thousands of followers on social media around the world have been sending messages of support and relief that our whole team has made it safely down," he said.
Mr Carter stayed at base camp with Mr Hutt's son after training guides to film Mr Hutt for his documentary Fly from Everest.
The filmmaker has a background in making extreme sports films. He said this time was different.
"To have a storyline now where Ken was forced to retreat from the mountain without achieving the summit or the paragliding flight is not necessarily a sad ending — in fact, seeing Ken reunited with his son at base camp, and the knowledge that he has achieved so much for Rotary's End Polio Now campaign and is going home to his family is actually a heart-warming and inspirational way to end our story here," he said.
The documentary will still be produced.