NYC99LA118

NTSB accident investigation · Balloon Works FIREFLY-7 · Gasburg, VA · May 23, 1999

Accident · Serious injuriesLimited investigationFinal report
Date
May 23, 1999, 08:10 local (12:10 UTC)
Place
Gasburg, VA
Injuries
1 serious, 2 uninjured
Damage
No damage
Phase of flight
Landing
Aircraft
N9070TBalloon Works FIREFLY-7
Weather
Visual (VMC) · Day
Status
Completed · report August 10, 2000
Report
Approved by Office Director
FAA report
19990523021549A
Case key
46378

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 unforecast high winds that required the pilot in command to make a precautionary landing.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

On ground/water collision with objectLanding
Object - other
Weather condition - high windCause
Precautionary landing - performedPilot in command

Analysis

The hot air balloon launched under light wind conditions. As the balloon was approaching the first steerage, at about 50 feet above the ground, the pilot had to climb the balloon to 300 feet to complete the turn. During the climb, a windshear flattened out one side of the balloon, re-inflating a moment later, violently shaking the entire aircraft. The pilot decided to abort the flight. A hay field was spotted about 4 miles ahead of the balloon. As the balloon neared the ground, the winds continued to blow, and the basket collided with a hay bail, at a speed of about 15 knots. After impacting the hay bail, the basket touched down, dragged along the ground, and rolled over. The balloon then collapsed completely to the ground.

Factual narrative

On May 23, 1999, about 0810 Eastern Daylight Time, a Balloon Works, Firefly-7, N9070T, was not damaged while landing in a field, near Gasburg, Virginia. The certificated pilot and one passenger were not injured. A second passenger was seriously injured. Visual meteorological conditions prevailed and no flight plan was filed for the local flight conducted under 14 CFR Part 91.

In a written statement, the pilot reported that he was a participant in a hot air balloon race. A weather briefer was present for the race, and had launched a 12-inch helium weather balloon. The pilot was present with the weather briefer when the weather balloon was launched, and they observed the surface wind from 210 degrees at less than 5 knots, with no significant wind shifts up through 800 feet.

The hot air balloon launched under light wind conditions, about 0745. As the balloon was approaching the first steerage, at about 50 feet above the ground, the pilot had to climb the balloon to 300 feet to complete the turn. During the climb, a windshear flattened out one side of the balloon, re-inflating a moment later, violently shaking the entire balloon. The pilot decided to abort the race, and informed the passenger that they would be landing in the first available field. A hay field was spotted about 4 miles ahead of the balloon, and the pilot maneuvered to it. The field was several hundred yards long, with power lines on the far end. Several other balloons had used the field to land, due to encountering the same type of winds. As the balloon neared the ground, the winds continued to blow, and the basket collided with a hay bail, at a speed of about 15 knots. Event officials, who were on the ground, and witnessed the accident, estimated the speed of the balloon at 20 knots. After impacting the hay bail, the basket touched down, dragged along the ground, and rolled over. The balloon then collapsed completely to the ground.

An airport located 10 miles to the northwest, reported, clear skies, winds from 210 degrees at 6 knots.

Aircraft

Registration
N9070T
Reported as
Balloon Works FIREFLY-7
Category
Balloon
Serial number
24634A
Airframe hours
365
Engine
unknown
Damage
No damage
Flight
Personal · Part 91
Registered owner
David C. Tomasetti
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 16, 1999 · 8 hours before
Departed
NONE · Lake Gaston Res, VA

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
50
Certificate
Commercial
Flight hours
830 total · 338 in this make and model · 778 as pilot in command · 16 in the last 90 days · 12 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
210° at 6 knots
Visibility
2.5 statute miles
Lowest ceiling
None
Temperature
64 °F, dew point 54 °F
Altimeter
29.00 inHg
Observed at
AVC, 10 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.