- Date
- July 2, 2008, 06:00 local (12:00 UTC)
- Place
- Boulder, CO
- Injuries
- 2 minor, 5 uninjured
- Damage
- Substantial damage
- Phase of flight
- Standing
- Aircraft
- N9014WAerostar International S-77A
- Defining event
- Standing: Miscellaneous/other
- Weather
- Visual (VMC) · Dawn
- Status
- Completed · report September 26, 2008
- Report
- Approved by Office Director
- Parties
- Federal Aviation Administration
- FAA report
- 20080702840569A
- Case key
- 68379
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
An encounter with a sudden gust of wind, which rendered the balloon uncontrollable and led to a collision with a tree.
Findings · 5
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
The pilot performed a normal cold-inflation of the balloon and instructed the passengers to board. The balloon was suddenly overcome by a gust of wind that pushed the envelope into a tree. The balloon was drawn upward by the wind, with its vent lines still entangled in the tree. As the lines became taut, sections of material ripped from the envelope, resulting in several long vertical tears. The pilot elected to abort the flight due to increasing wind speeds. The pilot attempted to gain control and stabilize the balloon, but it descended and collided with a tree. The basket came to rest about 20 feet above terrain. The pilot stated that there were no preimpact mechanical malfunctions or failures with the balloon.
Factual narrative
In a written statement, the pilot reported that he performed a normal cold-inflation of the balloon. He instructed the passengers to board and prepared for flight by arranging lines. The balloon was suddenly overcome by a gust of wind, pushing the envelope into a tree. The pilot elected to abort the flight due to increasing wind speeds. The balloon was suddenly dragged upward by the wind, but several rotation vent lines remained entangled in the tree. As the lines became taut, they ripped a section of material from the envelope, resulting in several long vertical tears (4 to 5 yards in length).
The pilot opened the burners in an attempt to gain control. As the balloon's airspeed increased to the wind speed, it descended and the basket collided with the wall of a building. It was again pulled up by the wind, and the pilot again applied heat to gain control. The balloon descended, and collided with a tree. The basket came to rest about 20 feet above terrain.
The pilot added that there were no preimpact mechanical malfunctions or failures with the balloon. He stated that the weather information he gathered via the Flight Service Station (FSS) did not predict wind gusts.
Aircraft
- Registration
- N9014W
- Reported as
- Aerostar International S-77A
- Category
- Balloon
- Serial number
- S77A-3024
- Engine
- Damage
- Substantial damage
- Flight
- Aerial observation · Part 91
- Operator
- Tommy Cederlund, doing business as Sunny Day Come Fly Away
- Registered owner
- Colorado Rocky Ballooning LLC
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · May 1, 2008
- Departed
- Boulder, CO
- Airport
- KBDU · Boulder Municipal Airport
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 59
- Certificate
- Commercial
- Flight hours
- 2,810 total · 1,000 in this make and model
Weather
- Conditions
- Visual (VMC) · Dawn
- Wind
- 310° at 6 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Observed at
- BJC, 12 nm away
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.