said by TomS_:
I always wondered why they had ash trays in the toilets on flights that are non smoking.
A lot of areas around the world still ALLOW smoking EVERYWHERE
Planes are ordered with generic lavs because it needs to be resold some day, in fact quite a few of the planes are leased from international leasing companies
But the ashtray is not to prevent flushing (bigger stuff than that goes down) it's so you won't put it in the waste bin, the original reason for the smoke detector.