Aircraft Accident/Incident Report

Joice, Iowa 50446
Monday, August 1, 2011 9:30 CDT

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that during an aerial application flight, he was paralleling a highway as he was applying chemical to a cornfield. He gained altitude to clear a homestead and then descended into the field to continue spraying. He reported that the helicopter impacted an unmarked wire that was strung diagonally between the road he was paralleling and the corner of the property. The helicopter impacted the field and the main rotor blades separated from the airframe, causing the helicopter to cartwheel prior coming to a stop. The helicopter sustained substantial damage to the main rotor blades and fuselage. The pilot reported that there was no mechanical malfunction or failure of the helicopter prior to the wire strike.

NTSB Probable Cause Narrative

The pilot's failure to maintain clearance from the wire.

Event Information

Type of Event Accident
Event Date 8/1/2011
Event Day of the Week Monday
Time of Event 930
Event Time Zone Central Daylight Time
Event City Joice
Event State IOWA
Event Country --
Zipcode of the event site 50446
Event Date Year 2011
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 432148N
Event Location Longitude 0932721W
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 Unknown
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 --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling --
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) --
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 180
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 6
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) --
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 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 28916
NTSB Notification Source FAA-CEN-ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Oct 12 2011 1:40PM
User who most recently changed record andj
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N51857
NTSB Number CEN11CA535
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 TEXAS HELICOPTER CORP
Aircraft Model OH-13H/M74A
Aircraft Series Identifier --
Aircraft Serial Number 78-024
Certified Max Gross Weight 2850
Aircraft Category Helicopter
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 Mar 1 2011 12:00AM
Airframe hours since last inspection --
Airframe Hours 4723
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name SCOTTS HELICOPTER SERVICE INC
Aircraft Owner Street Address PO BOX 92
Aircraft Owner City LE SUEUR
Aircraft Owner State MN
Aircraft Owner Country USA
Aircraft Owner Zipcode 56058-0092
Operator is an individual? No
Operator Name SCOTTS HELICOPTER SERVICE INC
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address PO BOX 92
Operator City LE SUEUR
Operator State MN
Operator Country USA
Operator Zip code 56058-0092
Operator Code --
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 --
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 Joice
Departure State IA
Departure Country USA
Departure Time --
Departure Time Zone CDT
Destination Same as Local Flt crash at destination city
Destination Airport Code --
Destination City Joice
Destination State IA
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Oct 12 2011 1:41PM
User who most recently changed record andj
Since inspection or accident Time of Accident
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --