FTW98LA231

NTSB accident investigation · Balloon Works Firefly 7-B · Longmont, CO · May 17, 1998

Accident · Serious injuriesLimited investigationFinal report
Date
May 17, 1998, 08:30 local (14:30 UTC)
Place
Longmont, CO
Injuries
1 serious, 1 uninjured
Damage
No damage
Phase of flight
Landing
Aircraft
N1527MBalloon Works Firefly 7-B
Weather
Visual (VMC) · Day
Status
Completed · report December 1, 1999
Report
Approved by Office Director
FAA report
19980517021179A
Case key
20616

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 properly position his foot for a high wind landing. Factors were high winds and windshear.

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 encounter with weatherLanding
Weather condition - high windFactor
Weather condition - windshearFactor
Hard landingLanding - flare/touchdown
Procedures/directives - not followedPilot in commandCause

Analysis

During the landing approach, the winds were from the south at 5 to 7 knots. At 30 to 40 feet above the ground, the pilot encountered wind shear out of the east at 30 to 35 knots, and the intended landing was aborted. The pilot climbed to 150 agl and set up for a high wind landing. Upon touchdown, the pilot's foot was caught between the wicker siding and the solid floor of the basket, and the pilot's ankle was broken. According to the pilot, the accident would not have occurred had he not improperly placed his foot between the wicket basket and the floor plate of the balloon at the time the balloon impacted the ground.

Factual narrative

On May 17, 1998, approximately 0830 mountain daylight time, a Balloon Works Firefly 7-B balloon, N1527M, was not damaged during landing near Longmont, Colorado. The private pilot received serious injuries and his one passenger was uninjured. The balloon was owned and being operated by the pilot under Title 14 CFR Part 91. Visual meteorological conditions prevailed for the personal cross-country flight that originated from a private field near Twin Lakes, Colorado, approximately one hour before the accident, and no flight plan was filed.

According to the pilot, the winds were from the south at 5 to 7 knots during the landing approach. At 30 to 40 feet above the ground, the balloon "encountered severe wind shear out of the east at 30 to 35 knots." The intended landing was aborted, and he climbed to 150 feet agl to set up for a high wind landing. The second landing "was typical for high wind conditions," but when the balloon landed, the pilot's foot was caught between the wicker siding and the solid floor of the basket. The pilot's ankle was broken when the balloon impacted the ground. From the point of initial impact to the balloon's final resting was 16 feet.

The pilot stated in a telephone interview following the accident that the mishap would not have occurred had he not improperly placed his foot between the wicket basket and the floor plate of the balloon at the time the balloon impacted the ground.

Aircraft

Registration
N1527M
Reported as
Balloon Works Firefly 7-B (FIREFLY 7-)
Category
Balloon
Serial number
10987
Airframe hours
223
Engine
unknown
Damage
No damage
Flight
Personal · Part 91
Registered owner
Keith R. Hanson
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 31, 1997 · 16 hours before
Departed
NONE · Twin Lakes, CO
Destination
NONE · CO

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
51
Certificate
Private
Medical
Unknown, Unknown
Flight hours
61 total · 49 in this make and model · 20 as pilot in command · 5 in the last 90 days · 4 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
190° at 7 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
57 °F, dew point 37 °F
Altimeter
29.00 inHg
Observed at
FNL, 19 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.