Pink Panther, unintented border incursions are a matter of fact and have been for quite a while, I remember hanging out of the door of an A111 looking at a roadsign for Newtownbutler and that was on the way to Monaghan for a weeks sabbattacal, during the week we had a couple of forays into the north, due to 'navigational errors', quite a different matter to a NATO a/c getting lost over Dublin!
Nearest to that must have been a few years back when the pilot banged out of a Harrier that continued on it's way out off the south coast into the Atlantic!
And what about the British Army Gazelle that got lost and landed in Monaghan. I know an ex Wessex pilot now who caused a furore by 'spying' on houses in the south, at night with his searchlight! In reality he got lost and was just looking for directions!