To tray a native way coming to a comparable framework of qualifications the Leonardo pilot-project AERONET has pursued a bottom-up approach. It is independent from national curricula or systemic preferences but profession-related. We surveyed the Typical Professional Tasks (TPT) of skilled work in aircraft and space industries in selected Airbus plants in France, Spain, Germany and the UK. These TPTs were identified in “expert-workers-workshops” with experienced workers and trainers in the respective plants. A validation of the lists with companies’ executives followed up. Each TPT describes a cluster of related work processes, e. g. “Production of metallic components for aircraft or ground support equipment”. We found that all involved countries differentiate between mechanics and electricians and that in each plant skilled workers perform between 9 and 12 TPTs (for each profession) with surprisingly small differences between the countries (details can be found on http://www.pilot-aero.net ). Further discussions led to an amount of 6 (mechanics) respective 7 (electricians) core tasks that are performed in all 4 countries by skilled workers. To be proficient in these tasks is not only part of skilled work but also the aim of the apprenticeship. Our proposal is to use these core tasks as the basis for a “transnational occupational profile”.