FlyerTalk Forums - View Single Post - Lav issues, water issues with regional jet flights
Old May 8, 2016 | 9:29 pm
  #8  
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Originally Posted by l'etoile
Airplane toilets use a vacuum. They do not operate like home toilets do. Did you try flushing it?
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
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