As a private pilot I have zero knowledge about how big jets are being flown so I was a little surprised to see that smaller Airbuses (A32x) only use spoilers for roll control on final approach. During the initial phase of the approach ailerons are being used but at a certain point they stay put in the neutral position and roll is controlled by the spoilers. When I mentioned this to the pilot when exiting the aircraft he was a little annoyed by the question and he said I must have seen it wrong. I've seen this numerous times since then so I'm pretty sure I wasn't mistaken. Is this actually
In a recent flight on an Airbus A380 I noticed that its ailerons are split into three segments which move independently. What advantages does this design have? Do other aircraft have split ailerons (or other control surfaces)?