A frantic father screamed "My daughter is in it" when he chased a bouncy whistle blowing away and killing his seven-year-old daughter inside, heard a court.
Summer Grant died of several injuries after inflatable attraction flew over a park in Harlow, Essex, The Sun reports.
The attraction was blown 300 meters down a hill and smashed into a tree with the kid inside before finally getting to rest.  Her father, Lee Grant, heard the summer screaming and chasing the jumping track when it began to cartwheeling in the air, Chelmsford Crown Court was told.
The hectic father had tried to drag it to the ground as it blew through the air to the Thurstons Fun Fair on Easter Saturday as Storm Katie barreled in.
But the court heard it was moving too fast to Lee to catch it and The summer tragically died of her injuries after being rushed to hospital.
Fairground worker William Thurston, 29, and his wife, Shelby Thurston, 26, both deny rape by gross negligence and a health and safety offense.
Tracy Ayling QC, prosecuted, said: "[Lee] turned around and saw that the dome inflatable had lifted in the air, seemed to hit a caravan before we ran over."
"He said" My daughter is in there . ""
Ms Ayling said that William Thurston was among those who chased the jumping hall when it blew away and when he went to help the summer, she thought she was very badly injured and struggling to breathe. "
The prosecutor continued:" It is the case of the crown that they violated the duty of care they owe to the summer of Grant by not making sure that the jumping track, called a circus super dome, inflatable, was adequately anchored to the ground and failed to monitor the weather conditions to make sure it was safe to use. "
Hygiene and safety guidelines indicate that blow-up batteries should not be used at wind speeds above 19 km / h – but the winds reached between 35 and 40 km / h at the dawn of summertime.
The couple had "planned" to take the blow down, but decided to let the summer take a few minutes.
Mrs Thurston told the police: "Then there was a storm like a freak tornado of wind – a massive gust of wind that came out of nothing."
The court heard that the inflatable dome was attached to the ground with 15 anchor points – each with a metal D-ring – and the insert came with the dome when it was bought.
Mrs Ayling talked about the inflatable and its formal inspection.
She said, "Its main shortcoming was an insufficient number of round anchoring points.
" This means that even when secured to the ground with all of these, the inflatable could still blow away. "
She told the court that a health and safety check of the dome after summer's death found that the mark of the exit to the dome was not true nor was the area with which the fan was meant
The parents of the summer who lived in Norwich , greeted their daughter at that time.
Her mother, Cara Blackie, said that summer was a "bright, beautiful and sweetest little girl" and her father described her as the "most happy, polite and beautiful girl in the world
The experiment continues.