The Duke of Cambridge has been involved in two rescues since his wedding at Westminister Abbey last Friday.
Prince William was among the crew of an RAF Sea King helicopter from RAF Valley in Anglesey who flew to the aid of a walker in Snowdonia.
The man, 70, was said to have had a heart attack on Lliwedd mountain on Wednesday night.
After flying him to hospital in Bangor, the crew returned and flew four men off Snowdon after one suffered vertigo.
The BBC reports the men were airlifted down from a narrow ridge in an area known as Crib-y-Ddysgyl - the scene of previous tragedies.
RAF Valley on Anglesey has confirmed that the prince was part of the crew involved.
