DEN86LA025

NTSB accident investigation · Balloon Works Firefly 6B · Englewood, CO · November 17, 1985

Accident · Minor injuriesLimited investigationFinal report
Date
November 17, 1985, 08:45 local (15:45 UTC)
Place
Englewood, CO
Injuries
1 minor, 1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N4052KBalloon Works Firefly 6B
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19851117061259A
Case key
16885

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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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.

Airframe/component/system failure/malfunctionCruise - normal
Fluid,fuel - waterFactor
Balloon equipment,burner system - unapproved partCause
Balloon equipment,burner system - iceFactor
Miscellaneous/otherLanding
Balloon equipment,envelope - burnedCause

Analysis

The plt stated that while on a balloon flt, the blast valve, which operates the burner flame, stuck open during one of the burns. The plt attempted unsuccessfully to disengage the blast valve. When the plt could not stop the flame with the blast valve, he manually closed the three propane tanks. To land, the plt opened a propane tank, relighting each time he wished to make a burn. Upon landing, the envelope shifted over the flame, burning seven gore panels.

Aircraft

Registration
N4052K
Reported as
Balloon Works Firefly 6B
Category
Balloon
Serial number
10068
Airframe hours
276
Engine
unknown
Damage
Substantial damage
Flight
Personal · Part 91
Operator
J. Robert Pendleton
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 11, 1985 · 46 hours before
Departed
Englewood, CO
Destination
Englewood, CO

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
39
Certificate
Private
Flight hours
48 total · 34 in this make and model · 48 as pilot in command · 3 in the last 90 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
95° at 6 knots
Visibility
46 statute miles
Lowest ceiling
8,000 ft broken
Temperature
9 °F, dew point 9 °F
Altimeter
30.00 inHg
Observed at
APA, 8 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.