a training flight of at least 1 hour (or a maximum of three totalling 1 hour) with the same flight instructor or class rating instructor. If you have already completed a proficiency check or skill test in another type or class of aeroplane, you will not have to complete this training flight
A series of training flights to complete the 1 hour doesn't need to be with the same instructor or on the same aircraft type (must be the same class: i.e. SEPL). The instructor who revalidates the rating must have flown the final training flight though.