https://www.belfasttelegraph.co.uk/area/down/newtownards/watch-plane-makes-emergency-landing-after-circling-co-down-airport/a/153515772.html
From the photo it looks to be a Alpi Aviation Pioneer 300 Hawk G-SHMN, it`s a home build aircraft also known as a PNR3. Current owner is from Bangor.
Terrible quality video, good to hear no-one was hurt.