. ... in general the prosthesis does not need to be certificated by the CAA, providing that failure of the prosthesis (e.g. falling off the stump) would not result in the pilot losing complete control of the aircraft. In the case of double upper limb amputees, the prostheses need to be certified by EASA to ensure that they are manufactured to the same standard as aircraft parts
Thanks moosp, they talk about no certification required as long they don't lose "complete" control of the aircraft. Interesting choice of words. They will never lose complete control as long as they have feet.