Do planes have horns?

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Tags

1. #which
2. #warning
3. #technology
4. #other
5. #mainly
6. #pilot
7. #primarily
8. #undergoing
9. #aircraft
10. #hangar
11. #system
12. #horns
13. #whereas
14. #functional
15. #plane
16. #aboard
17. #maintenance
18. #indispensable