The "DITCHING" button on Airbus aircraft has been mentioned several times in the wake of US1549. I'm aware of its existence but not its function(s?). Could some of you 'bus drivers shed some light on what happens when this button is pushed? Is it likely that it would still work on RAT/battery power only?
It will seal the ship in case of a water landing, and yes it will work on batt/rat power.