Airplane Toilet Waste

[Irishlad74]

Hi,

Do airplanes actually dispose of urine in ice blocks or is this an urban legend?????

Cheers,

Brendan

[Buenchico]

There have been occasions where toilet waste systems have leaked on aircraft, resulting in 'blue ice' build-up, which has subsequently fallen to the ground. So, stories such as 'frozen pee hits roof' are more than urban myths.

However, it is a myth that airliners routinely dispose of waste while in flight. It's not permitted. Even if they wanted to, it would be impossible, since the valve is usually on the outside of the aircraft.

See the excellent answer here, to a similar question, for further details:
http://answers.google.com/answers/threadview?i d=218186

Chris

[Irishlad74]

thanks Chris

[adamhornsby]

I would think it would be like a cassete system like in a caravan.