Do airplanes empty their toilets in the sky?

Related questions

1. Why are people scared of flying?
2. What is the lowest altitude a plane can fly?
3. Where do you feel the most turbulence on a plane?
4. How many airplanes are in the world?
5. How do I find out where my flight is coming from?
6. Can helicopters fly to Everest?
7. Why do planes not fly at night?
8. Will flights get Cancelled?
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Tags

1. #disposes
2. #circumstances
3. #leaked
4. #ground
5. #atmosphere
6. #flight
7. #lavatory
8. #under
9. #excrement
10. #toilet
11. #waste
12. #after
13. #while
14. #lands
15. #flushing
16. #sewage
17. #noise
18. #airplanes
19. #plane
20. #their
21. #normal