The one from former Yugoslavia? I've heard that one was fluffed up. There is no way you could survive a 33,000 flight free-fall, that is physical impossible.
Would you believe 2000 feet then ?
Because that's about the distance a human body needs to fall in order to reach terminal velocity, after which it accelerates no more.
Be that as it may, survival after falls from extreme heights always attract interest, and there is always some explanatory feature.
Now, I do this from memory, so . . . . .
There are some doubts about the Yugoslavian flight attendant. The aircraft blew up at 33000' but . . . . (lots of buts).
A Russian pilot in WW2 fell about 20000'. He fell onto a steep slope which caused his initial contact to be glancing, then the contours of the valley allowed him to decelerate gradually.
An American bomber crewman called Magee fell about 20000' over a French town. (St Nazaire ? Somewhere like that.) He crashed through the glass roof of the town railway station which slowed him enough to survive hitting the ground.
Nicholas Alkemade was rear gunner in a Lancaster bomber. When the aircraft was set on fire over Germany he was unable to reach his parachute, and so he decided to jump rather than burn. He survived an 18000' fall. He crashed through downward sloping branches of conifer trees, then into a snowdrift. He was captured and was asked where his parachute was, and was disbelieved when he said he had jumped without one. When the Germans examined the wreck of his plane they discovered the metal fittings of his burned parachute pack stowed in the fuselage. The Commandant of the PoW camp shook Alkemade's hand when this news came through, and gave him a certificate verifying the events, because he said that after the war nobody would ever believe Alkemade's story.
Interestingly, Alkemade said that he blacked out very briefly when he left the aircraft, and was disorientated when he recovered consciousness. He looked "down" and saw his feet and the stars - he was falling headfirst.