At the time there was talk here on PPRuNe about it just having come out of maintenance (somewhere in the FE?) and a drip shield not having been installed back where it should have been in the below decks area between doors 1L and 1R. And or it having been cracked.
Hence the drastic effects.
Any word on that in this final report?
There was also talk of 'lazy FAs' having caused a blockage of the galley drain by pouring coffee grounds down it.
Drain mast heater failure is a very different beast.
original thread