I saw that 500 in the hangar at Cork once also, the main blades were off it as they had found micro cracking in them according to the technician who was nearby and commented noticing my interest. I do recall it was used for fishery trasfers, and the remark was that it was very very fast, never saw it in action though. Godawful colour on it also in my opinion, overall greywith a dayglow tail.