Originally Posted by
goalie
Not all are created equal. The airbusses use a vacuum flush but iirc, the 57's flush like a home today with a blue liquid
None flush like a home. Older planes (pre-vacuum) have a blue water recirculating system. That would be independent of the alleged potable water system that runs in the airplane sinks. The lack of water in the sinks is generally admitted to be a weight- and cost-saving measure.
Last edited by l etoile; May 8, 2016 at 10:29 pm