What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Narrative: appendixes did not vent. The bottom of the gas cell exploded downward as the balloon approached it's ceiling of about 21,000 ft. the balloon was flown down using burners. As helium leaked out, the balloon got progressively heavier. Approximately 2 hours after rupture, the balloon was landed in a field near Knox, IN. The rip system failed to deploy and the balloon dragged into an irrigation pipe.
As the FAA filed it
NARRATIVE: APPENDIXES DID NOT VENT. THE BOTTOM OF THE GAS CELL EXPLODED DOWNWARD AS THE BALLOON APPROACHED IT'S CEILING OF ABOUT 21,000 FT. THE BALLOON WAS FLOWN DOWN USING BURNERS. AS HELIUM LEAKED OUT, THE BALLOON GOT PROGRESSIVELY HEAVIER. APPROXIMATELY 2 HOURS AFTER RUPTURE, THE BALLOON WAS LANDED IN A FIELD NEAR KNOX, IN. THE RIP SYSTEM FAILED TO DEPLOY AND THE BALLOON DRAGGED INTO AN IRRIGATION PIPE.