WPR11LA017

NTSB accident investigation · Lindstrand Balloons 90A · Cottonwood, AZ · October 16, 2010

Accident · Serious injuriesLimited investigationFinal report
Date
October 16, 2010, 07:37 local (14:37 UTC)
Place
Cottonwood, AZ
Injuries
3 serious, 1 minor
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N807PWLindstrand Balloons 90A
Defining event
Enroute-cruise: Midair collision
Weather
Visual (VMC) · Day
Status
Completed · report May 26, 2011
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20101016048672A
Case key
77599

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The paraglider pilot's failure to see and avoid the hot air balloon, which resulted in a midair collision.

Findings · 2

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.

Attention/monitoring: monitoring other aircraftPersonnel issues › Psychological · Pilot of other aircraftLindstrand Balloons 90A: 1 caseAll aircraft: 231 casesProbable cause
Object/animal/substance: aircraftEnvironmental issues › Physical environment · Response/compensationLindstrand Balloons 90A: 1 caseAll aircraft: 116 casesProbable cause

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 of a hot air balloon reported that he was on a local area flight during an airport appreciation day at the departure airport. During the flight, he saw a powered paraglider maneuver close to the envelope of his hot air balloon. The paraglider subsequently collided with the envelope of the hot air balloon. The pilot of the unregistered paraglider reported that he was focused on taking photographs of another hot air balloon at the time and was not aware that he had maneuvered so close to the accident hot air balloon. The paraglider pilot attempted an evasive maneuver to avoid the hot air balloon; however, the paraglider flew into the side of the envelope, penetrating it. As the balloon and paraglider descended, they remained attached until ground impact.

Factual narrative

On October 16, 2010, at 0737 mountain standard time, N807PW, a Lindstrand 90A balloon, sustained substantial damage following a midair collision with a single-seat unregistered powered paraglider near Cottonwood Airport, Cottonwood, Arizona. The pilot was operating the hot air balloon under the provisions of Title 14 Code of Federal Regulations Part 91. The balloon pilot sustained minor injuries and his two passengers sustained serious injuries. The pilot of the paraglider sustained serious injuries. Visual meteorological conditions prevailed and no flight plan was filed. Both aircraft departed from Cottonwood Airport. According to the balloon pilot, he was on a local area flight during Airport Appreciation Day. There were multiple hot air balloons flying in the area at the time. He saw the paraglider pilot maneuvering close to the balloon envelope. The balloon pilot waived his arms and shouted at the paraglider pilot that he was too close; however, the paraglider approached the balloon and descended. The paraglider flew into the side of the envelope, penetrating it. As the balloon and paraglider descended, they remained attached; the balloon pilot tried to decrease the rate of descent as much as possible. During the descent, the balloon pilot provided an emergency briefing to his passengers, and directed one of the passengers to transmit a distress call. At 100 feet, the pilot turned off the pilot lights and closed the fuel tank valves. The basket then impacted the top of a fence and came to rest in an asphalt parking lot. Following the accident, the paraglider pilot told the balloon pilot that he was taking photographs. According to the Cottonwood Police Department report, the paraglider pilot was interviewed at a medical center by a deputy. The paraglider pilot reported that he and his son had departed from cottonwood in their respective paragliders. The pilot was going to take pictures of a friend who was in one of the hot air balloons flying in the area. As he approached the hot air balloon that his friend was in, he noted another hot air balloon below him about 200 to 300 feet; this other balloon was the one that he eventually collided with. He took a picture of his friend, and saw the accident hot air balloon was 30 feet below and 50 feet in front of him. The paraglider pilot attempted to perform an evasive maneuver, but the paraglider impacted the envelope of the balloon.

Aircraft

Registration
N807PW
Reported as
Lindstrand Balloons 90A
Category
Balloon
Serial number
5381
Airframe hours
92
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Eric Wadleigh
Registered owner
Eric Wadleigh
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 23, 2010
Departed
P52 · Cottonwood, AZ
Destination
P52 · Cottonwood, AZ

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
57
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Flight hours
344 total · 4 in the last 90 days · 1 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
40° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
59 °F, dew point 36 °F
Altimeter
30.20 inHg
Observed at
SEZ, 14 nm away

Docket · 3

The files NTSB released with the investigation on March 24, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 975 KB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.