Join Date: Mar 2009
Location: NYC
Programs: AS MVPG, DL KM, Bee Six, Bonvoy Plat, Choice Plat, IHG Plat, Avis PC, Natl Exec, Greyhound Road Rwds
Posts: 20,104
W&B issues are more common on the A321 and even moreso on the A321neo. You can't load up the rear bin too much or the plane will tip back on its tail, but you can't load up the forward bin so much that the plane won't be able to rotate on takeoff. Earlier this year I experienced a W&B delay on an Alaska Airlines A321neo.
The 737-900 and -900ER are also a PITA from what I hear.
-J.