[Rockpile]

It may be a bomb in the left rear lavatory. The Italian DC9 off of Sicily around 1979 and the US flight in the early 60s, Chicago to KC, that blew up from the dynamite bomb over Iowa were placed in the latrines.

[TXnMA]

Hey! You're right! I just blew up that Russian diagram of the interior, and what I thought were Galleys are labeled, "WC"!! DUH!!!

That's why it helps to have several sets of eyes looking at things like this... Thanks!

When I blow the damage view from the left side up, it looks like there might be a bit of "sooting" visible on the left side where the floor break occurred. Your lavatory scenario makes that more plausible.

Thanks again!