Originally Posted by
DWN3GRN
So how would one de-activate "Lift Dump". It seems to me that when Max Power or Go Around is initiated the "Lift Dump" retracts the leading and or trailing edges devices and doesnt lockout flap retraction. Not a hawker wizard but that could be a lawsuit in the making.. my 2cents
Lift Dump is achieved simply by taking the airbrake handle over a gate and full aft....so to get out of lift dump you move the handle back over that gate. It is purely mechanical and has nothing to do with full power or idle. The spoilers and flaps will go to lift dump at any time the mains are on the ground. The motor that moves the flaps from 45(landing) to 75(lift dump) is a high speed motor and only requires a few seconds to go from 75 all the way to 15(t.o.). The flap handle can be moved while in lift dump, but will not result in flap movement.