You can read about the signing of the A319 here: https://www.atlantic.fo/Default.aspx?pageid=5265&NewsItemId=3442
This model of the aircraft (A319-112) is by iFDG (homepage http://www.ifdg.net/) and with CFM56-5B engines as Atlantic Airways has acquired irl.
I have completely made this aircraft inspired of their currently Bae 146-200