Depending on the cost, PLAAF may never see the need to do so. They are going to be building many fighters using AESA radars in the future. It takes a while to get the production of T/R modules and AESA radar up to support that. The J-11B radar is already quite powerful, so I don't think it's on top of the todo list.When will the J-11B/S receive AESA upgrades?