Summary
On July 03, 2007, a Cameron Balloons Z-77 (N4021M) was involved in an accident near Battle Creek, MI. The accident resulted in 1 minor injury, with 1 person uninjured out of 2 aboard. The aircraft sustained substantial damage.
The National Transportation Safety Board determined the probable cause of this accident to be: The whisper burner's fuel valve opening for undetermined reasons, which resulted in a fire after landing. A factor in the accident was the balloon envelope's parachute top not reseating.
The balloon was substantially damaged after it landed and caught fire during the Battle Creek Field of Flight Hot Air Balloon Festival. The pilot stated that after approximately one hour in the air, the balloon landed safely in a yard. When the pilot looked up inside the top of the balloon envelope, the "parachute top did not reseat." He attempted to reseat the top by using a "blast of heat" from the burners but it did not work. The pilot "knew the balloon would quickly sink down on top of the basket" so he turned the burners to their horizontal position and prepared to push the envelope fabric away. When the balloon envelope began to descend towards the ground the pilot reported that "we suddenly had a fire in the basket." Both the pilot and passenger were able to exit the basket.
This accident is documented in NTSB report CHI07CA189. AviatorDB cross-references NTSB investigation data with FAA registry records to provide comprehensive safety information for aircraft N4021M.
Accident Details
Probable Cause and Findings
The whisper burner's fuel valve opening for undetermined reasons, which resulted in a fire after landing. A factor in the accident was the balloon envelope's parachute top not reseating.
Aircraft Information
Registered Owner (Current)
Analysis
The balloon was substantially damaged after it landed and caught fire during the Battle Creek Field of Flight Hot Air Balloon Festival. The pilot stated that after approximately one hour in the air, the balloon landed safely in a yard. When the pilot looked up inside the top of the balloon envelope, the "parachute top did not reseat." He attempted to reseat the top by using a "blast of heat" from the burners but it did not work. The pilot "knew the balloon would quickly sink down on top of the basket" so he turned the burners to their horizontal position and prepared to push the envelope fabric away. When the balloon envelope began to descend towards the ground the pilot reported that "we suddenly had a fire in the basket." Both the pilot and passenger were able to exit the basket. The pilot "determined the fire was coming from the burners" so he returned to the basket and turned off the fuel tanks. The fire was subsequently extinguished by the passenger and bystanders.
An examination of the balloon after the accident revealed the fuel valve for the whisper burners was in the "on" position.
Data Source
Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# CHI07CA189