Aircraft Accident/Incident Report

Zwingle, Iowa 52079
Wednesday, July 28, 2010 17:30 CDT

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that he was conducting agricutural spraying operations in the airplane when the accident occurred. He stated that he had completed a spray pass and made a turn for another pass. As he came out of the turn the airplane was heading west into the afternoon sun. The pilot stated that he misjudged the height of the top wire of poles along the edge of the field. After striking the wire he noted that he had almost no elevator control and executed a landing in a field. The airplane subsequently nosed over. The pilot made no mention of control difficulties prior to striking the wire.

NTSB Probable Cause Narrative

The pilot's failure to maintain clearance from wires during the agricultural flight.

Event Information

Type of Event Accident
Event Date 7/28/2010
Event Day of the Week Wednesday
Time of Event 1730
Event Time Zone Central Daylight Time
Event City Zwingle
Event State IOWA
Event Country --
Zipcode of the event site 52079
Event Date Year 2010
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 421419n
Event Location Longitude 0904237w
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 --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1653 Central Daylight Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID DBQ
Elevation of weather observation facility 1077
Distance of event from weather observation facility (units?) 10
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 3500
Sky/Lowest/Cloud Conditions Few
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) 28
Dew Point at event time (in degress fahrenheit) 19
Wind Direction (degrees magnetic) 330
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 11
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.01
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor 1
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 27421
NTSB Notification Source FAA Des Moines FSDO
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Sep 8 2010 12:51PM
User who most recently changed record dinc
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N6030U
NTSB Number CEN10CA445
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 137: Agricultural
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name AIR TRACTOR INC
Aircraft Model AT-502B
Aircraft Series Identifier --
Aircraft Serial Number 502B-0323
Certified Max Gross Weight --
Aircraft Category Airplane
Aircraft Registration Class --
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 Unknown
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name KLINKENBORG AERIAL SPRAYING & SEEDING INC
Aircraft Owner Street Address PO BOX 548
Aircraft Owner City PARKERSBURG
Aircraft Owner State IA
Aircraft Owner Country USA
Aircraft Owner Zipcode 50665-0548
Operator is an individual? No
Operator Name KLINKENBORG AERIAL SPRAYING & SEEDING INC
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address PO BOX 548
Operator City PARKERSBURG
Operator State IA
Operator Country USA
Operator Zip code 50665-0548
Operator Code K4GG
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Agriculture
Operator Certificate Number K4GG536H
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 Yes
Departure Airport Code --
Departure City Zwingle
Departure State IA
Departure Country USA
Departure Time --
Departure Time Zone CDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code --
Destination City Zwingle
Destination State IA
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Oct 25 2010 1:42PM
User who most recently changed record broda
Since inspection or accident --
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --