What is the highest a helicopter has ever flown?

Related questions

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3. What is Permatrim?
4. What keeps a hovercraft up?
5. How do you measure a transom?
6. Does a hovercraft float?
7. How much weight can a hovercraft carry?
8. How is a helicopter able to hover?
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Tags

1. #turboshaft
2. #helicopter
3. #altitude
4. #france
5. #weight
6. #highest
7. #however
8. #reduce
9. #single
10. #flown
11. #which
12. #equipment
13. #boulet
14. #aerospatiale
15. #unnecessary
16. #stripped