Squawk_ident - scavenged ice from centre tank
Squawk_ident's post is interesting, especially where it says:
"Indications are that the water in the scavenge system is freezing prior to discharging in the main tank. Frozen water (or ice) in the scavenge system could result in a low rate of scavenge or no fuel scavenge. "
But the report does not comment on what effect such frozen water would have on systems 'down stream' of the scavenge system.
Seems to be an odd omission but I assume Boeing concluded that it was not worth comment.
regards