FTW96LA361

NTSB accident investigation · Balloon Works Firefly 7 · Rio Rancho, NM · August 24, 1996

Accident · No injuriesLimited investigationFinal report
Date
August 24, 1996, 08:45 local (14:45 UTC)
Place
Rio Rancho, NM
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N7414UBalloon Works Firefly 7
Weather
Visual (VMC) · Day
Status
Completed · report April 3, 1997
Report
Approved by Office Director
FAA report
19960824025849A
Case key
19958

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 pilot's failure to maintain clearance from the power lines. The variable wind condition was a related factor.

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.

In flight collision with objectManeuvering
Weather condition - variable windFactor
Object - wire,transmission
Clearance - not maintainedPilot in commandCause

Analysis

Prior to the launch, pibal balloons indicated that the winds were from the north-northeast. The pilot ground tracked the balloon at altitudes from 5 feet to 500 feet AGL. During the ground tracking, the pilot noted that the winds varied in their direction and speeds. Upon observing power lines, the pilot planned the flight to 'burn and climb over the power lines.' Upon realizing that the balloon was not going to clear the power lines, the pilot pulled the vent line and tried to land the balloon; however, the balloon struck the power lines.

Factual narrative

On August 24, 1996, at 0845 mountain daylight time, a Balloon Works Firefly 7, N7414U, registered to and operated by a private owner under Title 14 CFR Part 91, collided with power lines while maneuvering near Rio Rancho, New Mexico. The private pilot and the passenger were not injured and the balloon sustained substantial damage. Visual meteorological conditions prevailed for the local personal flight and a flight plan was not filed. The flight originated about 1 hour before the accident.

During telephone interviews, conducted by the investigator-in-charge and on the enclosed Pilot/Operator Report, the pilot reported the following information. Upon arrival at the launch site, the release of several pibal balloons indicated that the winds were from the north-northeast. The pilot launched his balloon about 0740 and flew solo for approximately 40 minutes. On the subsequent flight, one passenger was aboard the balloon. The pilot executed a controlled descent and ground tracked the balloon at altitudes from 5 feet to 500 feet AGL. During the ground tracking, the pilot noted that winds at about 50 feet AGL were increasing from the north; however, at higher altitudes the winds had been more from the east and slower. Upon observing east to west power lines about a mile beyond the balloon track, the pilot planned the flight to "burn and climb over the power lines." Upon realizing that the balloon was not going to clear the power lines, the pilot pulled the vent line and tried to land the balloon. The balloon struck the power lines.

The FAA inspector, the pilot and the repair facility (statement enclosed) personnel examined the balloon. The group found numerous damaged panels with 7 panels requiring replacement, 3 panels requiring partial replacement, and 7 panels requiring patches. Chaffing was found on 2 stainless steel suspension cables. At least 2 of the horizontal load tapes were heat damaged. The FAA inspector and the repair facility reported that the balloon would require the repairs prior to further flight.

Aircraft

Registration
N7414U
Reported as
Balloon Works Firefly 7
Category
Balloon
Serial number
F7-361
Airframe hours
408
Engine
unknown
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Hugh J. Charlton
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 9, 1996 · 13 hours before
Departed
NONE

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
53
Certificate
Private
Medical
Unknown, Unknown
Flight hours
184 total · 184 in this make and model · 169 as pilot in command · 9 in the last 90 days · 5 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F

FAA reports on this event · 1

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