Originally Posted by mig15 and for belarg
The only thing generally separating the pax cabin and the hold is a fibreglass honeycomb floorboard and a fireproof liner. Pressure should be the same.
- one would certainly hope so, hence
so diff pressure will be at least the same
but maybe you need to look a bit more closely on the walkround at the state of some of your cargo hold doors after they have been lovingly 'modified' by the odd baggage belt? I believe blow out panels are fitted to help relieve any XS diff pressure. Sometimes I'm surprised some of the doors actually shut.
Anyway, back to the topic - I reckon Viva should be ok, but best to check with the airline. Of course, "if the cabin air supply fails" all bets are off! Best not sit too near curry eaters too.