It must have been around summer 1983 & when I was at Palace Barrack's gates in Holywood,NI. (It involved sausages, burgers etc & I suspect most of the British Army in NI ate them at some point in their time here).
I heard an unusual aircraft engine noise, looked up too see what I now know to be an Embraer Xingu & a Tucano landing.
Strangely, I never seen a single production model over Belfast.
I think they made the right decision to build them in the UK.
Carl