Once again:
As a first consequence, a major fuel leak occured. B4 is rejected because the overfilling of the tanks (as per procedures) concerned the tanks 1, 2, 3 and 4, but not the tank 5 which suffered the leak. This tank was not overfilled, it was filled.
I think it was not uncommon for BA to fill (not
overfill) the #5 tank.
If you have data which suggest/prove otherwise, please feel free to share them
