What is the fastest a plane has ever gone?

Related questions

1. How fast is a sonic boom?
2. What is the loudest sound on earth?
3. Do pilots hear the sonic boom?
4. Why do we no longer hear sonic booms?
5. Is sound faster than a bullet?
6. Do bullets break the sound barrier?
7. What is the sound of horn called?
8. Are bullets faster than light?
9. How long does a sonic boom last?
10. How sonic boom is caused?

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16. #which
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18. #current
19. #manned