Primary finding
Probable cause
A burner flameout, which resulted in the pilot's inability to arrest the balloon’s descent and its subsequent impact with power lines as he was trying to relight the burner.
Investigator assessment
Analysis narrative
The pilot reported that, just after lifting off in the balloon, one of his passengers dropped to the bottom of the basket because he was afraid. After about 15 minutes of trying to get the passenger to relax, the pilot began looking for a place to land the balloon. The balloon was about 75 ft above ground level when the burner flamed out. While trying to relight the burner with a striker, the balloon descended and struck power lines, which severed four of the eight suspension cables attached to the basket. The balloon then impacted a building. According to the pilot, the burner had a history of flameouts, and he had experienced it many times. The pilot reported that there were no preaccident mechanical malfunctions or failures with the balloon that would have precluded normal operation.
Source record
Factual narrative
The pilot reported that just after lifting off in the balloon, one of his passengers dropped to the bottom of the basket in fear. After about fifteen minutes of trying to get the passenger to relax, the pilot began looking for a place to land the balloon. The balloon was about 75 ft above ground level (agl) when the burner flamed out. While trying to relight the burner, the balloon descended and struck power transmission lines, severing four of the eight suspension cables attached to the basket. According to the pilot, the Adams burners have a history of flame outs, and he has experienced it many times. The pilot reported no pre-impact mechanical malfunctions or failures with the hot air balloon that would have precluded normal operation.