How old can a plane fly?

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Tags

1. #average
2. #cycles
3. #flight
4. #fatigue
5. #aircraft
6. #roughly
7. #years
8. #flights
9. #pressurization
10. #operable
11. #endure
12. #about
13. #before
14. #approximately
15. #after
16. #metal
17. #boeing
18. #retired
19. #hours
20. #service