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ASN Wikibase Occurrence # 196411
Last updated: 14 January 2021
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Date:29-JUN-2017
Time:07:40
Type:Silhouette image of generic AT6T model; specific model in this crash may look slightly different
Air Tractor AT-602
Owner/operator:Wilbur Ellis Co
Registration: N4196Y
C/n / msn: 602-1183
Fatalities:Fatalities: 1 / Occupants: 1
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:8 miles west of Gwinner, Sargent County, SD -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Nature:Agricultural
Departure airport:Lisbon, ND (6L3)
Destination airport:Lisbon, ND (6L3)
Investigating agency: NTSB
Narrative:
An employee of the operator reported that the planned aerial application flight was delayed about 2 hours while the pilot waited for the weather conditions to improve. The pilot had spoken with individuals by phone before the flight in an attempt to assess the local conditions. The visibility at the airport was about 1-1/2 miles when the pilot departed.

A witness reported that she was sitting on her patio when she heard the airplane. The sound of the engine was normal, "not anything unusual at all." She observed the airplane emerge from the fog and "within seconds" impact the ground. The airplane was level or descending slightly and did not appear to change its flight path before impacting gradually rising terrain. She noted that the airplane did not appear to be out of control, nor did it seem that anything was wrong mechanically. She recalled that it was "very, very foggy" at the time, with about 200 yards visibility. There was no precipitation and little or no wind at the time.

A postaccident examination did not reveal any anomalies consistent with a preimpact failure or malfunction.

It is likely that the pilot encountered instrument meteorological conditions while operating at a low level and inadvertently impacted the terrain.

Probable Cause: The pilot's decision to attempt flight with low-level fog in the area, which resulted in an encounter with instrument meteorological conditions and impact with terrain.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20170629X13505&key=1
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=4196Y

Accident investigation:
cover
  
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 3 months
Download report: Final report

Media:


Images:


Photo: NTSB

Revision history:

Date/timeContributorUpdates
29-Jun-2017 17:34 Geno Added
30-Jun-2017 05:29 Geno Updated [Registration, Cn, Operator, Departure airport, Destination airport, Source, Damage, Narrative]
30-Jun-2017 09:56 Iceman 29 Updated [Total occupants, Location, Source, Embed code, Narrative]
08-Oct-2018 16:43 ASN Update Bot Updated [Time, Operator, Departure airport, Destination airport, Source, Narrative, Accident report, ]
08-Oct-2018 17:26 harro Updated [Source, Narrative, Photo]

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