Aircraft Accident/Incident Report

Laurel, Iowa 50141
Monday, July 16, 2007 CDT

NTSB Narrative Summary Released at Completion of Accident

The pilot was last seen at the airport around 1230. He was scheduled to spray two bean fields and was to return to the same airport. When he had not returned by 1430 a ground and air search was initiated. The airplane was located by air about 3 hours later. There are no known witnesses to the accident. The airplane was found in an open grass area next to a dry riverbed located near one of the fields that was to be sprayed. The surrounding terrain sloped downward to the riverbed, then began to slope upward. The airplane impacted the terrain in a slight right-wing-low, nose-down attitude at a point where the terrain begins to slope upward. The airplane then cartwheeled prior to coming to rest. Examination of the wreckage failed to reveal any mechanical failure/malfunction which would have resulted in the accident.

NTSB Probable Cause Narrative

The pilot failed to maintain clearance with the upsloping terrain for undetermined reasons.

Event Information

Type of Event Accident
Event Date 7/16/2007
Event Day of the Week Monday
Time of Event --
Event Time Zone Central Daylight Time
Event City Laurel
Event State IOWA
Event Country --
Zipcode of the event site 50141
Event Date Year 2007
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 420646N
Event Location Longitude 0961137W
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 1253 Central Daylight Time
Direction of event from weather observation facility (degrees) 360
Weather Observation Facility ID MIW
Elevation of weather observation facility 974
Distance of event from weather observation facility (units?) 17
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 4200
Sky/Lowest/Cloud Conditions Scattered
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) 31
Dew Point at event time (in degress fahrenheit) 20
Wind Direction (degrees magnetic) 260
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 12
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.9
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 23988
NTSB Notification Source FAA
NTSB Notification Date Jul 16 2007 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jul 30 2008 9:00AM
User who most recently changed record NTSB\johb
Basic weather conditions Visual Meteorological Cond
FAA District Office Des Moines, IA FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N203DM
NTSB Number CHI07LA213
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 137: Agricultural
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Air Tractor
Aircraft Model AT-402A
Aircraft Series Identifier --
Aircraft Serial Number AT-402
Certified Max Gross Weight 6000
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 Annual
Date of Last Inspection Jan 1 2007 12:00AM
Airframe hours since last inspection 226
Airframe Hours 4745
ELT Installed No
ELT Activated --
ELT Aided Location of Event Site --
ELT Type --
Aircraft Owner Name HELM FLYING SERVICE INC
Aircraft Owner Street Address P.O. Box 251
Aircraft Owner City Harvey
Aircraft Owner State ND
Aircraft Owner Country USA
Aircraft Owner Zipcode 58341
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 LMBG
Owner has at least one certificate --
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation Agriculture
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 MIW
Departure City Marshalltown
Departure State IA
Departure Country USA
Departure Time 1230
Departure Time Zone CDT
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 Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jul 24 2008 3:36PM
User who most recently changed record GAMW
Since inspection or accident Time of Accident
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --