Hi Sav. It was indeed a nice day for a bit of flying, at least until the afternoon rain rolled in!
As regards the helicopter that did a little roof-top shopping in Athlone a few years ago, that was the similarly-registered N239MW, a Hughes 500C (C-20 engined). I was a passenger in N239MW whilst closely following N239MY one day a few years ago. Much confusion ensued with the controller at Baldonnel as he received calls from both ships from similar locations!
500 Fan.