CEN10CA456

NTSB accident investigation · Lindstrand 69A · Longview, TX · July 30, 2010

Accident · No injuriesData collectionFinal report
Date
July 30, 2010, 07:40 local (12:40 UTC)
Place
Longview, TX
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N96LNLindstrand 69A
Defining event
Maneuvering-low-alt flying: Fire/smoke (non-impact)
Weather
Visual (VMC) · Day
Status
Completed · report December 20, 2010
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA Flight Standards District Office
FAA report
20100730045489A
Case key
76824

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

The the pilot's inadvertent movement of the burner assembly off center resulting in an in-flight fire of the skirt and envelope of the balloon. Contributing to the accident was the pilot's attention being diverted to venting the envelope to avoid an obstacle and lose altitude.

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.

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 was on approach to a target at the Great Texas Balloon Race. Witnesses said that it appeared the balloon was slightly below a set of telephone wires as it approached the target area. The pilot saw the wires and took action to clear the lines. However, as he leaned over the side of the basket to see the obstacle better, he inadvertently pulled the burner assembly off center of the envelope throat. The burner then ignited the skirt and 22 envelope panels. The pilot landed the balloon was immediately.

Factual narrative

The pilot was participating in the Great Texas Balloon Race. According to his accident report, while inflating the balloon he thought the burner gimble was loose, but it seemed to be stable by the fuel lines held by the upright covers. Witnesses said that as the balloon approached the target area, it appeared to be slightly below a set of telephone wires. The pilot saw the wires and added heat to gain altitude. As he leaned over the side of the basket with his hand on the burner assembly, he inadvertently pulled the burner assembly off center of the envelope throat. The pilot said he released his hold on the burners momentarily and vented the envelope to lose altitude, then activated the burner to slow the descent. The burner moved to the side and burned the skirt, 22 envelope panels and "3 or 4" load tapes. The balloon master and an FAA inspector were on site watching the competition and instructed the pilot to land. The pilot made an uneventful landing and secured the balloon in the target area. The pilot wrote that he felt that if the burner system had a centering devise or springs (as is the case with the Raven, Aerostar, Balloon Works, and Eagle Balloon systems), this problem would have been avoided. The pilot stated, "The attention to the attitude of the balloon should not be interrupted with having to look up to see if the burners are pointed in the right direction. I believe it would not take much engineering to add a centering device, such as springs or a centering device, which would keep the burners centered if the screws or bolts are loosened due perhaps to vibration from driving." Statements submitted by a witness and an FAA safety technician corroborated the pilot's statement.

Aircraft

Registration
N96LN
Reported as
Lindstrand 69A
Category
Balloon
Serial number
5001
Damage
Substantial damage
Fire
In-Flight
Flight
Air race/show · Part 91
Operator
Walter G. Carlisle, Jr.
Registered owner
Walter G. Carlisle, Jr.
Airworthiness certificate
Standard, Normal
Departed
NONE · Longview, TX
Destination
NONE · Longview, TX
Flight plan
Unknown

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
70
Injuries
Minor
Certificates
Private, Commercial
Airplane ratings
Single-engine land
Medical
Class 2, With waivers/limitations
Flight hours
9,800 total · 10 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
0° at 0 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
81 °F, dew point 70 °F
Altimeter
29.96 inHg
Observed at
GGG

Docket · 6

The files NTSB released with the investigation on September 16, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.4 MB 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.