Camilla was visiting an airbase near Chippenham to officially open it as patron of Wiltshire Air Ambulance when she discussed the scary incident.
"I just really wanted to say a huge thank you to everybody who has been involved with this wonderful project. I know what fantastic work the air ambulance does," Camilla said.
"I've seen it and I have known friends that have literally been saved by it. Even in Yorkshire my granddaughter was taken off in the Yorkshire one, one year, and luckily she was sorted and alright, but it gave my daughter such confidence to be aboard it."
While the Duchess didn’t confirm which granddaughter was airlifted, it is thought that she was speaking of Eliza Lopes as she openly discussed how her daughter Laura was onboard.
Camilla is the grandmother of Eliza, Gus and Louis, she is also a grandma to Lola and Freddie Parker Bowles, the children of Tom Parker Bowles.
Camilla went on to say that if her grandchildren see her on TV, "they rather tend to wave”.