Electro-Hydraulic Servo Actuators are the leading technology in the field of primary flight control. These components have been subjected to several studies to investigate new fault diagnostics procedures. Previous works have brought to an automatic test, designed with a sequence of signals able to assess the health status of the unit. Although the progress archived in fault isolation techniques, it is not always possible to precisely isolate two critical subassemblies of the A320 Elevator: servo valve and the recentering device. These two components are linked together by a complex mechanical kinematic chain that makes the fault isolation task particularly tricky. The present thesis, which is the outcome of a six months collaboration between Lufthansa Technik (LHT) and Polytechnic of Turin, tackles the problem with an original approach: exploiting collaborative robotics to perform automatic tests.