Approx 1342 I heard and saw at a distance what looked very much like a Coast Guard AW189 passing Glenarm towards Larne area at low level.
Nothing on ADSB or FR24, but likely too low to pick it up.
UPDATE- it`s G-MCGR out of Prestwick.Tracked from PIK to Portstewart, Ballycastle, then down along the Antrim Coast to Belfast.