After the first integration tasks conducted in March, it was scheduled a second mission to FADA-CATEC premises of three days, in Sevilla (Spain), in order to conclude the NSS integration tasks in AirCATEC D130 and to perform the validation flights which were no not conducted in March due to adverse weather conditions.

For this purpose, Santi Vilardaga (Pildo Labs), Josep Montolio (Pildo Labs) and Daniel Viaño (Pildo Labs) moved to Sevilla at 9^th, 10^th and 11^th of April 2018, and worked together with FADA-CATEC team: Francisco Alarcón and José Ramón López.

During the first day, technical tests were conducted in CATEC laboratories to ensure the proper functioning of all NSS and AirCATEC D130 equipment. During the second day attempts were made to conduct the validation flights in the Hacienda de Orán. However, due to bad weather conditions (rain and strong wind), the validation flights had to be postponed to the third and last day of the mission.

During the last day, multiple validation flights were conducted in the Hacienda de Orán, involving short and long procedures.

Initially, short instrument procedures were conducted in order to have the aircraft close to the remote pilot, so potential navigation issues could be visually identified. Furthermore, the short instrument procedure was successfully conducted under different configurations (different speeds, manually flown by the remote pilot, automatically frown by NSS, etc.) in order to obtain data for comparison purposes.

Then, after verifying that the whole system was behaving as expected, a couple of long instrument procedures were successfully performed (always inside remote's pilot visual line of sight), demonstrating the reliability of the system for conducting long routes.

With all the recorded data, an analysis will be conducted to identify which are the system performances and to assess the navigation specification that could be achieved thanks to NSS. Based on these results, a final procedure will be designed in ATLAS and a final demonstration activity will be conducted in mid-May.