Aircraft Accident/Incident Report

Wilsonville, Oregon 97070
Sunday, June 16, 1996 6:15 PDT

NTSB Narrative Summary Released at Completion of Accident

Having aborted the first attempt to land, the pilot was maneuvering the balloon for a landing in a second field. He maneuvered to pass over high tension (power line) wires, but did not see the static wire. The balloon subsequently impacted the static wire, which broke and began arcing after contact with the high voltage wires beneath. A fire erupted on the balloon's envelope, but the pilot was able to land without igniting the propane tanks. A high, thin, gray overcast existed at the time, which made visual acquisition of the single static wire difficult.

NTSB Probable Cause Narrative

failure of the pilot to maintain clearance from the static wire, which became shorted to a transmission wire and subsequently caused a fire to erupt on the balloon's envelope. Factors relating to the accident were: the obstructions (power line wires), and the pilot's reduced ability to visually detect the static wire, due to the gray sky condition in the background.

Event Information

Type of Event Accident
Event Date 6/16/1996
Event Day of the Week Sunday
Time of Event 615
Event Time Zone Pacific Daylight Time
Event City WILSONVILLE
Event State OREGON
Event Country --
Zipcode of the event site 97070
Event Date Year 1996
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 547 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 315
Weather Observation Facility ID HIO
Elevation of weather observation facility 204
Distance of event from weather observation facility (units?) 17
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 15000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Unknown
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 15
Air Temperature at event time (in degrees celsius) 8
Dew Point at event time (in degress fahrenheit) 4
Wind Direction (degrees magnetic) 280
Variable Wind Indicator Unknown
Wind Speed (knots) 5
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 2
Injury Total None --
Injury Total Serious 2
Injury Total All 4
Investigating Agency NTSB
NTSB Docket Number (internal use) 946
NTSB Notification Source --
NTSB Notification Date Jun 16 1996 12:00AM
NTSB Notification Time 834
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 8 2000 10:05AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N71233
NTSB Number SEA96LA122
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire In-flight
Aircraft Explosion None
Aircraft Manufacturer's Full Name Balloon Works
Aircraft Model FIREFLY 8B
Aircraft Series Identifier FIREFLY 8B
Aircraft Serial Number F8B-148
Certified Max Gross Weight 990
Aircraft Category Balloon
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 0
Number of Engines --
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jun 9 1996 12:00AM
Airframe hours since last inspection 20
Airframe Hours 250
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name ASH, JONATHAN, G.
Aircraft Owner Street Address 55611 BIG RIVER DRIVE
Aircraft Owner City BEND
Aircraft Owner State OR
Aircraft Owner Country
Aircraft Owner Zipcode 97707
Operator is an individual? --
Operator Name ASH, JONATHAN, G.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 16210 SKYLINERS ROAD
Operator City BEND
Operator State OR
Operator Country
Operator Zip code 97707
Operator Code
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code
Departure City
Departure State
Departure Country
Departure Time 600
Departure Time Zone PDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --