What really happens when you flush a plane toilet?

[ahlam1399]

http://img-s-msn-com.akamaized.net/tenant/amp/entityid/AAvaQA7.img?h=100&w=100&m=6&q=60&o=f&l=fUnless you?ve flown first class, or in a private jet, aircraft loos are windowless, cramped affairs that usually reek of cheap sanitizer. But they have come a long way ? and rarely get the recognition they deserve.

أكثر... (http://www.msn.com/en-ca/travel/news/what-really-happens-when-you-flush-a-plane-loo/ar-AAvbyI5?srcref=rss)