Hey Mhsieh.....I did a little research on this and found what was basically said by MD11Nut and Boomer on your last post about this ( http://www.airliners.net/discussions/tech_ops/read.main/2126/6/
The drooped ailerons (inboard and outboard) are part of an A1 package to increase MTOW to 630k. They droop only when flaps are set to a takeoff setting, and the nose gear air/ground switch is made. Normal droop is 0 deg. inboard / 4 deg. outboard with the flaps up (I believe the 4 deg. outboard was part of the PIP). When the nose is compressed and flaps are set to takeoff, flaps droop 11.5 deg. inboard and 15 deg. outboard.
Deltas' MD-11's are rated at 625k, and do not have the A1 package (they do have the 4 deg. outboard droop). From my understanding, not all MD-11's can get the A1 mod, so DL probably keeps them all the same for commonality purposes. Ships 813-815 are quite a bit different from the rest (look at the flap canoe fairings), so they are probably eligible.
BTW- all of the World MD-11's that we work on (except N279WA) have the A-1 mod.
This plane is built to withstand anything... except a bad pilot.