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ASN Wikibase Occurrence # 157677
Last updated: 17 July 2021
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Date:19-JUL-2013
Time:10:34
Type:Silhouette image of generic AT8T model; specific model in this crash may look slightly different
Air Tractor AT-802A
Owner/operator:Milhon Air Inc
Registration: N86BM
MSN: 802A-0285
Fatalities:Fatalities: 0 / Occupants: 1
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:East of Huntingburg Airport (KHNB), Huntingburg, IN -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Nature:Agricultural
Departure airport:Huntingburg, IN (HNB)
Destination airport:Huntingburg, IN (HNB)
Investigating agency: NTSB
Narrative:
The pilot conducted an aerial application flight over three fields for about an hour. Data recovered from the on-board GPS system, which recorded the airplane's flight path and altitude, revealed that the pilot flew two full circles over the first field before beginning aerial application to that field. According to the operator, these circles were consistent with routine "scouting" passes to look for obstructions. The data showed that no similar "scouting" circles were flown over either the second or third field. The aerial application on the third field was completed in a small valley, and the pilot appeared to be set up to spray on an easterly heading, into the sun. Power lines were oriented on a north-south heading at the east end of this field. The airplane struck one of these power lines and then continued briefly in an easterly direction before it impacted terrain.

Examination of the accident site revealed that a power line was severed from the impact and that pieces of the power line were among main wreckage. A postaccident examination did not reveal any evidence of preimpact mechanical malfunctions or failures that would have precluded normal airplane operation. According to the operator, before a pilot sprays a field, it is normal to circle the field at least once to look for obstructions. Because the pilot did not adequately scout the area for potential hazards and was flying toward the sun, it is likely that he was not aware of the power lines and did not see them before impact.
Probable Cause: The pilot's failure to maintain clearance from a power line during an aerial application maneuver. Contributing to the accident was the pilot's failure to identify potential obstructions in the area before beginning low-altitude maneuvers.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20130722X01307&key=1
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=86BM

https://flightaware.com/photos/view/21873-6497539c695423a4a1dc72239c1ca897b2789146/aircrafttype/

Accident investigation:
cover
  
Investigating agency: NTSB
Status: Investigation completed
Duration:
Download report: Final report
Location


Revision history:

Date/timeContributorUpdates
19-Jul-2013 16:23 Geno Added
19-Jul-2013 19:20 Geno Updated [Time, Phase, Source, Narrative]
24-Jul-2013 06:04 Anon. Updated [Time]
21-Dec-2016 19:28 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
29-Nov-2017 08:49 ASN Update Bot Updated [Departure airport, Destination airport, Source, Narrative]

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