Aircraft Accident/Incident Report

Hartford, Kentucky 42347
Friday, May 10, 2013 18:42 CDT

NTSB Narrative Summary Released at Completion of Accident

Before spraying a tract, the pilot circled it three times to look for lines, obstructions, houses, and people and to develop a plan to spray the field. He completed two spray passes, and during the third spray pass, he heard a “pop” sound and saw “the lines” as they contacted the windscreen. The helicopter was controllable for a “brief moment,” but it then yawed slowly to the right and slightly down at which point all control was lost. The helicopter continued to rotate clockwise and veered to the right, then impacted the ground on the left side. The pilot reported that there was no preimpact mechanical failure or malfunction with the helicopter or its systems, and that during his three orbits of the tract, he did not identify the power line that he subsequently contacted. While the company policy and procedures manual specified that the pilot identify potential problem areas or miscommunications, it did not specify that flight hazards be identified during the pre-work conference. Postaccident, the operator changed its policy and procedures manual and specifically stated that flight hazards be identified during the pre-work conference before spraying a tract.

NTSB Probable Cause Narrative

The pilot’s failure to avoid a powerline that crossed a field that he was spraying. Contributing to the collision was the company’s failure to specifically mention that flight hazards be identified during a pre-work conference.

Event Information

Type of Event Accident
Event Date 5/10/2013
Event Day of the Week Friday
Time of Event 1842
Event Time Zone Central Daylight Time
Event City Hartford
Event State KENTUCKY
Event Country --
Zipcode of the event site 42347
Event Date Year 2013
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 373014N
Event Location Longitude 0870001W
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 1856 Central Daylight Time
Direction of event from weather observation facility (degrees) 330
Weather Observation Facility ID OWB
Elevation of weather observation facility 407
Distance of event from weather observation facility (units?) 16
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 6500
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) 22
Dew Point at event time (in degress fahrenheit) 19
Wind Direction (degrees magnetic) 190
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) 29.85
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) 31482
NTSB Notification Source FAA Southern C-ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Aug 20 2013 2:15PM
User who most recently changed record johb
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N94PH
NTSB Number ERA13LA236
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 BELL
Aircraft Model 206B
Aircraft Series Identifier --
Aircraft Serial Number 2809
Certified Max Gross Weight 3200
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 5
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection May 3 2013 12:00AM
Airframe hours since last inspection --
Airframe Hours 13635
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name PROVINE HELICOPTER SERVICE INC
Aircraft Owner Street Address 308 AIRPORT RD
Aircraft Owner City GREENWOOD
Aircraft Owner State MS
Aircraft Owner Country USA
Aircraft Owner Zipcode 38930-7702
Operator is an individual? No
Operator Name PROVINE HELICOPTER SERVICE INC
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 308 AIRPORT RD
Operator City GREENWOOD
Operator State MS
Operator Country USA
Operator Zip code 38930-7702
Operator Code ZMPG
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 ZMPG517J
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 Hartford
Departure State KY
Departure Country USA
Departure Time 1837
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 USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jun 3 2013 3:42PM
User who most recently changed record kenj
Since inspection or accident Last Inspection
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --