Boise Air Terminal (Gowen Fld) Airport
Aircraft Accident/Incident Report

Boise, Idaho 83705
Wednesday, January 2, 2002 10:45 MST

NTSB Narrative Summary Released at Completion of Accident

Shortly after takeoff for an after maintenance test flight, the pilot noted a fire in the left engine. The pilot reduced power and landed the aircraft on the remaining runway without further incident. The engine and systems were shut down prior to the pilot and passenger evacuating the aircraft. Fire personnel responded and applied a small amount of foam on the engine, which was at the time, only smoking. Inspection of the engine revealed that the fire was contained to the accessory section of the engine. Heat distress was found to the outboard nacelle web assembly and the top wing skin under the nacelle was warped. Further inspection found that an electrical arc in the alternator wiring due to chafing against a pneumatic tube was responsible for the ignition of the fire. Accumulated fuel vapor from a fuel cell leak that was an on-going maintenance discrepancy for approximately three weeks preceding the accident, and eventually fixed, was most probable the source of the fuel.

NTSB Probable Cause Narrative

Improper clearance between an alternator wire and a pneumatic line and fuel fumes. The alternator wire chafe and arcing were factors.

Event Information

Type of Event Accident
Event Date 1/2/2002
Event Day of the Week Wednesday
Time of Event 1045
Event Time Zone Mountain Standard Time
Event City Boise
Event State IDAHO
Event Country --
Zipcode of the event site 83705
Event Date Year 2002
Event Date Month 1
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
Event Location Airport Boise Air Terminal (Gowen Fld)
Event Location Nearest Airport ID BOI
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 2868
Weather Briefing Completeness Unknown
Investigator's weather source Pilot
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
Lighting Conditions Day
Lowest Ceiling Height 5000
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 2
Dew Point at event time (in degress fahrenheit) -2
Wind Direction (degrees magnetic) 150
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) --
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.13
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 12411
NTSB Notification Source FAA Regional Operations Center
NTSB Notification Date Jan 2 2002 12:00AM
NTSB Notification Time 1135
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Nov 4 2002 9:07AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office Boise, Idaho

Aircraft Involved

Aircraft #1

Aircraft Registration Number N132Z
NTSB Number SEA02FA023
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire In-flight
Aircraft Explosion None
Aircraft Manufacturer's Full Name Beech
Aircraft Model 58P
Aircraft Series Identifier --
Aircraft Serial Number TJ-284
Certified Max Gross Weight 6240
Aircraft Category Airplane
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 6
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Jun 14 2001 12:00AM
Airframe hours since last inspection 11
Airframe Hours 6083
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name US Department of Agriculture
Aircraft Owner Street Address 3833 S. Development Ave.
Aircraft Owner City Boise
Aircraft Owner State ID
Aircraft Owner Country USA
Aircraft Owner Zipcode 83705
Operator is an individual? No
Operator Name --
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City --
Operator State --
Operator Country --
Operator Zip code --
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
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) Flight Test
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code BOI
Departure City Boise
Departure State ID
Departure Country USA
Departure Time 1045
Departure Time Zone MST
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 Takeoff - initial climb
Report sent to ICAO? Yes
Evacuation occurred No
Date of most recent change to record Jul 15 2002 12:25PM
User who most recently changed record STAM
Since inspection or accident Time of Accident
Event Location Runway Number and Location 10R
Runway Length 9763
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --