Maintenance operations have a great impact on the safety and life expectancy of any product. This is especially true for certain applications within the aerospace industry, which must pass rigorous security checking procedures. Wearable helping systems can help to reduce costs and working time by guiding workers in some specific and difficult tasks. The purpose of this work is developing a handless and wearable guided system that supports and helps workers in assembly and verification tasks within the aeronautic field. The worker is able to request information for the specific task in a non invasive way and also ask the Team Leader for real time technical support and assistance. The system developed has been tested in an aeronautic company (Airbus Military) and its implementation in specific assembly tasks assessed. It was found that the proposed system can help workers to make their tasks faster, more accurate and more secure.