FTW83FA001

NTSB accident investigation · Thunder Balloons AX9-140 · Albuquerque, NM · October 3, 1982

Accident · FatalField investigationFinal report
Date
October 3, 1982, 09:47 local (15:47 UTC)
Place
Albuquerque, NM
Injuries
4 fatal, 3 serious, 1 minor, 1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N9606AThunder Balloons AX9-140
Weather
Visual (VMC) · Day
Status
Completed · report October 3, 1983
Report
Approved by Office Director
FAA report
19821003052449A
Case key
69725

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

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.

FireLanding - flare/touchdown
Balloon equipment,burner system - improperCause
Maintenance,major alteration - improperPilot in commandCause
Fuel system,line - improperCause
Fuel system,line - leakCause
Fuel system,line fitting - improperCause
Fuel system,line fitting - leakCause
Fuel system - fireCause
Miscellaneous/otherOther
Balloon equipment,envelope - fire
Balloon equipment,basket - fire
ExplosionOther
Fuel system,tank - exploded

Analysis

After what was described as a normal landing liquid propane began escaping. The propane vaporized & was ignited engulfing the gondola in flames. Four pax exited the gondola while it was still on the ground & the last survivor exitedat about 25 ft as the balloon began rising. The remaining 4 pax began jumping or falling from the gondola at about 100 ft with the last exiting at an estimated 600 ft AGL. The balloon continued to rise & at about 1,000 ft two propane tanks exploded. The owner/pilot had installed 6 propane cylinders. A portion of one tee fitting was determined to be brass, & according to a metallurgical report the hoses used to manifold the propane cylinders were determined to be rubber covered by a woven fabric. Only cadium plated steel fittings & wire mesh reinforced hoses were recommended by thunder balloons,ltd. & at no time would brass fittings & non-wire mesh hoses be recommended by them.

Aircraft

Registration
N9606A
Reported as
Thunder Balloons AX9-140
Category
Balloon
Serial number
317
Airframe hours
60
Engine
unknown
Damage
Substantial damage
Fire
Both
Flight
Personal · Part 91
Operator
Joseph A. Gonzales
Registered owner
Thunder Pacific
Departed
Albuquerque, NM
Destination
Albuquerque, NM

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
41
Certificate
Private
Medical
Unknown
Flight hours
65 total · 45 in this make and model · 30 in the last 90 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 5 knots
Visibility
50 statute miles
Temperature
154 °F

FAA reports on this event · 1

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