In this document I have carried out a study of all the important points which might affect the operational safety of running-ins, landings and take offs of aircraft of F key on the cross runway 02/20 of the Barcelona - El Prat Airport. The reason for this study is that for a few days in the month of January 2017 runway 07L/25R has remained closed due to resurfacing of track and it has been necessary for airplanes to land and take off on the parallel track of the sea 07R/25L or do the landing by the crusade when resurfacing works permitted. Key F aircraft operating in the Barcelona - El Prat Airport are currently the A380 and the B747, but today there are more and more airline companies that include this type of aircrafts in its fleet since they perform new long-distance routes. The main objective is to study if the runway 02/20 is suitable for operation of A380 aircraft and for this we have analysed the necessary requirements for this operation, identifying actions to be carried out (widening of taxiway, displace vertical signals, introduce any restrictions for span during running-in...), so that this operation minimizes the operational security risks and without affecting the operation of the airport. During the study I have followed ICAO Annex 14 volume I of aerodromes and the A380 safety studies in the Barcelona - El Prat Airport. The contents of memory are on the one hand, the current status of the operation of the A380 by the parallel tracks of the Barcelona - El Prat Airport and on the other hand a proposal for design of runway and taxiways as well as a new proposal of running-in.