Queen Elizabeth is voicing her concerns over Prince William's affinity for flying his family around in helicopters.
"Her Majesty has told close friends and courtiers that she would like William to stop flying himself, particularly in bad weather, as helicopters are not the safest form of transport," a source shared with The Sun. "It keeps the Queen awake at night and she is understandably very worried."
For decades, the royal family has followed an unofficial rule that prohibits all members of the same brood from boarding the same aircraft in case there's an accident, as it would shake up the line of succession.
However, since William himself is a pilot, the royals has been lax about flying protocols. In fact, it's believed that the Cambridges flew via helicopter for their recent trip to Jordan.
A photo from their vacation was used for their annual Christmas card this year.
"She knows William is a capable pilot but does not think it is worth the risk for all five of them to carry on flying together and can’t imagine what would happen. It would spark a constitutional crisis," the source shared. "The Queen has told William she is worried that, however good he is as a pilot, bad weather and accidents can strike at any time."
"The Queen is delighted in the way William and Kate have risen to the challenge in recent years and knows the monarchy is safe in their hands," noted the source. "She thinks the future is bright with them at the helm after Charles, but if something happened to him and the family it doesn’t bear thinking about."
In 2014, following the birth of Prince George, it was reported that the Duke of Cambridge asked the Queen for permission to fly as a family-of-three.
At the time, a palace official gave a public statement, revealing "While there is no official rule on this, and royal heirs have traveled together in the past, it is something the Queen has the final say on.”