Originally posted by seawolf:
the A319 has a overwing emergency exit on each side while the A320 has two overwing emergency exists on each side.
W/o having the ability to compare size against another aircraft, this is the only way which I can remember. The 3
20 has two emergency exits and the 3
19 has 1.
I'm not too sure about the 321 which UA will be inheriting from US though.