Wales Ambulance Service said two of its three helicopters had been cleared to fly with checks continuing on a third aircraft.
More top news
Sunshine in the south and east, with outbreaks of rain in the north and west.
Voting SNP will "strengthen Scotland's hand" against a Tory government, Nicola Sturgeon has said ahead of her party's manifesto launch.
A keeper killed by a tiger at a zoo in Cambridgeshire has been named in reports and described as the "shining light" of her workplace.