A flight with 236 people on board crashed in a heavy storm, breaking into three pieces - but everyone miraculously survived.
Britannia Airways flight BY226A left Cardiff at 8.14pm on September 14, 1999 heading to Girona.
The two-hour flight did not go as planned as the Boeing 757 crashed at Girona Airport in a storm, hitting the runway, veering right and bouncing off an embankment before breaking into three pieces and coming to rest in a field.
Miraciously, no one was killed in the crash, but one man died in a Spanish hospital a day later from a suspected heart attack, WalesOnline reports.
Passengers had to wait outside for up to two hours in the stormy conditions and in the dark waiting to be rescued.
Even though everyone survived the crash there were still minor injuries as well as many who suffered psychological difficulties, including anxiety, nightmares, depression, flight phobia and post-traumatic stress disorder.
Some passengers have recalled that terrifying day they thought they were going to die.
Catherine Allaway, who lives in Caerphilly, was looking forward to a one-week holiday with her daughter, Kirsty-Leigh - who was nine at the time.
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She said: "When we came down the second time everything was black outside, all I could see was lightning around the airport. The plane was bouncing and bouncing until eventually we just crashed."
She went on: "The oxygen masks just fell out of the ceiling and I just felt like there was a bomb on the plane, that was my first reaction.
"I just had thoughts of opening up my dad's grave for me and Kirsty. People were screaming and panicking, though there was a silence as well. I mentally blacked out then."
When they got off the plane, Catherine said she had no idea what they were jumping into.
The mum said: "As we were running, we were just falling into the mud. We sheltered by the trees and we were just hugging each other and crying.
"I had a swollen left ankle from where my foot got stuck and Kirsty was vomiting from shock, she couldn't stop. We had no clothes, we were just wearing what we were standing in."
It would be three years before Catherine and Kirsty went abroad again.
Kirsty, who has cerebral palsy, was offered the chance to go on an all-expenses-paid trip to Florida. And they booked a holiday to Torremolinos.
Catherine said she broke down in tears at the check-in desk as their assigned seats were the same ones from the nightmare Britannia Airways flight.
She says she suffers still experiences panic attacks and has been taking anti-depressants since the crash.
Catherine said: "I've suffered from post-traumatic stress disorder. I get flashbacks when planes fly over our house, I will be shaking in bed at the sound of a plane, I have tried watching a plane land but I end up bursting into tears.
"When it's the anniversary it all comes back to us, the smell of fuel also reminds me of the crash. I try and fly once a year — it does get easier over the years but never in a million years will I go back to that airport."
The plane broke into three pieces after skidding off the runway while carrying more than 200 passengers.
Kirsty was trapped and recalled being rescued by a man who was sitting in front of her when she became trapped in her seat.
She said: "The man's seat in front of me went forward and back and it went back into me, his headrest landed on me, he managed to pick himself up and go but we were still stuck. Out of nowhere, this massive man then grabbed the seat and picked me up and shouted 'Run, run, run'."
Kirsty is terrified of thunder and lightning and says she hopes to board a plane again someday with her son.
Brian Ballard from Swansea, was part of a group of ten which included his son, Gareth, and niece, Katie, who were on the fateful flight.
He recalled how some of his party went back to the UK after the crash and the others continued their holiday.
He said: "We were reliving it all day, everyone out there wanted to know what had happened to you.
"Four of us got the plane home and the rest went on the bus which took 30 hours. We had people to talk to, we were a big group and we never bottled it up. My wife had a damaged leg."
Brian says he became terrified of climbing ladders after the crash.
He added: "I didn't fly for ten years after the crash, I didn't want to fly, It was the fear that something might happen.
"The thunderstorms are the worst for me, I have pulled over a couple of times in thunder and lightning."
Gareth helped those who were trapped in their seats.
He said: "It was four years before I flew again — it was a case of if I don't fly again then I am not going to see the world."
Katie Sawyer, who was only six at the time of the crash said the experience left her with post-traumatic stress disorder.
Five years after the crash, an official report was published and looked into the events which caused the plane to break into three pieces on landing.
The document revealed that the weather, power failures, inadequate training, delays and design error all contributed - but the report did not appropriate blame.
