'sid
I believe EI-EPR, the "Full Colour" A319 is ex EC-KEV (cn 3169), so only 4 years old.
EI-EPR Aer Lingus Airbus A319-111 - cn 3169 - Planespotters.net Just Aviation
I agree that is makes little sense to have 2 servicable aircraft parked up, I would have though that even running them in place of A320's on light routes immedietly would have been a better resource allocation.
JAS