The Electro-Hydraulic Servo Actuator (EHSA) is a key technology used for primary flight control on aircrafts. If the development of an advanced diagnostic procedure to detect failures is of great interest to the aerospace industry, it is also fundamental to merge it with the new criteria of the so called Industry 4.0.This document, as the result of a nine months work at Lufthansa Technik (LHT) facilities in Hamburg, wants to be a guideline for using collaborative robots in the field of aircraft maintenance. The research, in fact, was mainly focused on understanding limits and potentialities of collaborative robotics and to develop a program for automatic robot adjustments on primary flight control servo-actuators.