Aircraft Accident/Incident Report

Midvale, Idaho 83672
Saturday, June 5, 2004 8:30 MDT

NTSB Narrative Summary Released at Completion of Accident

While spraying a field from east to west and working under high tension powerlines, which ran diagonally across the field from the southeast to the northwest, the aircraft impacted one of the powerlines that was lower than the others. The aircraft impacted terrain and was subsequently destroyed as it was consumed by fire.

NTSB Probable Cause Narrative

The failure of the pilot to maintain clearance from the high tension powerline. A factor was the powerline.

Event Information

Type of Event Accident
Event Date 6/5/2004
Event Day of the Week Saturday
Time of Event 830
Event Time Zone Mountain Daylight Time
Event City Midvale
Event State IDAHO
Event Country --
Zipcode of the event site 83672
Event Date Year 2004
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 443003N
Event Location Longitude 1164817W
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 Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 753 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 180
Weather Observation Facility ID ONO
Elevation of weather observation facility 2228
Distance of event from weather observation facility (units?) 15
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 25
Dew Point at event time (in degress fahrenheit) 12
Wind Direction (degrees magnetic) 230
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 7
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.9
Density Altitude (feet) 4095
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None --
Injury Total Serious 1
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 16621
NTSB Notification Source Regional Operations Center
NTSB Notification Date Jun 5 2004 12:00AM
NTSB Notification Time 800
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Oct 28 2004 10:11AM
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 N8440K
NTSB Number SEA04LA099
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 137: Agricultural
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name Grumman
Aircraft Model G-164B
Aircraft Series Identifier --
Aircraft Serial Number 694B1
Certified Max Gross Weight 6800
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 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection May 15 2004 12:00AM
Airframe hours since last inspection --
Airframe Hours 7804
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name Weiser Air Air Service Inc.
Aircraft Owner Street Address 1364 Hansen Road
Aircraft Owner City Weiser
Aircraft Owner State ID
Aircraft Owner Country USA
Aircraft Owner Zipcode 83672
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 W5IG
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) Aerial Application
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code 0U9
Departure City Midvale
Departure State ID
Departure Country USA
Departure Time 745
Departure Time Zone MDT
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 Maneuvering - aerial application
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Aug 24 2004 6:49PM
User who most recently changed record STAM
Since inspection or accident Time of Accident
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --