Originally Posted by
Ewfflyer
You'll run out of rudder control prior to aileron control. Hence when at altitude the forward slip demo you steer via the ailerons with full rudder deflection. So that is the ultimate limitation(or if you are in a twin combine rudder with some differential power).
Not true in every airplane. In a low wing, you'll likely hit the aileron limit first due to ground clearance issues. Prime example..KC135...18 inches under the inboard engines.