Genghis said:
Mr Heald has made no mention of the use of rudder as a reserve control in the event of an aileron failure - most aircraft are specifically designed to permit this, and I can think of at-least one case in a light aircraft, and another in an airliner, where the pilot did just that.
In that situation the technique is to keep the yoke centred and use it only for elevator control and not turn it even slightly. The easiest way to do it is to hold onto the shaft then all you need do is use the secondary effect of rudder to control the roll (left rudder initially yaws to the right which causes a roll to the right.....). It's fairly easy to fly an aircraft using just rudder, although I did have a right rudder cable snap on me once and following a few minutes entertaining flying I figured out that I could still use the left rudder with almost full deflection. All I had to do was trim the rudder fully to the right and fly with left rudder pressure to correct it. Uncomfortable, but perfectly manageable.
I guess the same procedure may apply in the event of a broken elevator cable. If you lose up elevator, trim fully nose up then keep downward pressure on the yoke against the trim - I don't really want to test that one out though!
AS