Can a plane just fall out of the sky?

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Tags

1. #extremely
2. #airliners
3. #water
4. #uphill
5. #plane
6. #inherently
7. #aircraft
8. #failure
9. #military
10. #including
11. #indeed
12. #catastrophic
13. #there
14. #helicopters
15. #stable
16. #which
17. #unless
18. #structure
19. #cannot