Low clouds and poor visibility are the most disruptive factors for aviation. So, considering the expected growth of the air traffic over the next decades, it is vital to reduce the impact of difficult weather conditions. The European FP7 project called “ALICIA” – All conditions operations and Innovative Cockpit Infrastructure – here below described aims at developing new and scalable cockpit applications which can extend aircraft operations in degraded conditions and at providing the critical building blocks necessary to reduce delays in Europe associated with bad weather. The final goal is to achieve All Conditions Operations (ACO) allowing aircraft to fly with the same safety and performance in almost every conditions.