Primary finding
Probable cause
Total failure of the deflation line due to heat damage (as evidenced by glazing), most likely caused by the improper use of the flight controls (burner system) by person(s) unknown.
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NTSB investigation record
DEN99IA154
CompletedBalloon Works Firefly9· N2570E
- Date
- August 11, 1999
- Location
- Hartsel, CO
- Conditions
- VMC
- Record
- Completed
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