Originally Posted by
Bucking Bar
On an RJ, it is a bucket with a flapper valve and a drain. It can not really break. Most deferrals seem to relate to ground handlers refusing to service it and the crew eventually saying "no"
They'll defer it when the "return to seat" light is blown out or when the door is off the tracks as well.
Or in the 900 when the forward lav floor "feels soft"
eeewwwww that's nasty.