I have a bit of a feeling that there's been flying there a lot longer than that. In fact not long after that I was wazzing around NI at all sorts of heights 24/7.
There has been, for sure: spent a bit of time in military helicopters myself round there. Indeed, the whole time I was a kid, jet aircraft flew overhead.
The point is that this one (LoganAir) aircraft is one noisy bugger, and it's every night/morning.