I have been doing a fair bit of studying of the "Animal"....and I am baffled by the systems in it.....I thought I would start a thread in which anything a person has found can be posted for the benefit and understanding of others....and thus make the flying of this beast even more enjoyable and challenging than it already is!Hydraulics - 3 Hydraulics systems, each powered by 2 engine driven pumps plus 2 Reversible Motor Pumps to provide alternate pressure should one system fail. These are all controlled by the Hydraulic System Controller, which will remain in Auto mode unless triple Hyd Failure occurs or 2 Hydraulic Systems fail as well as a Pump in the remaining system.Aircraft has a "Sioux City Valve"...in Hydraulic System 3....it shuts off flow, it is located in th rear pressure bulkhead...it ensures that total fluid loss on the System 3 is avoided, and retains control of Ailerons, Spoilers and Stab Trim.AFS - The Flap Limit Auto/OVRD system retracts flaps if the speed exceeds the limit for flap settings between 15 and 50 degrees at speeds greater than 175 knots. Flaps will return to selected position when speed is reduced to normal.