[BITList] What really happens when you flush a plane loo?

[michael J Feltham]

https://www.telegraph.co.uk/travel/travel-truths/What-happens-when-you-flush-a-plane-loo/ <https://www.telegraph.co.uk/travel/travel-truths/What-happens-when-you-flush-a-plane-loo/> 
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