7 - 10 mins in which you can't get a visual representation of the route. We were encouraged by the training dept to use 'fast realigning' to aid turnaround time. This was especially the case if we were late arriving or had a 'tight slot'. Our FMC's were rather old & had a small memory capacity. As a result only the regular departure SID's & STAR's remained in the database. Therefore, if we had a different SID than the one in the FMC we would have to construct it ourselves. With some airfields having complicated procedures like Milan the extra 7 mins was often invaluable!