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ASN Wikibase Occurrence # 138168
Last updated: 2 December 2021
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Type:Silhouette image of generic AT3T model; specific model in this crash may look slightly different
Air Tractor AT-400
Owner/operator:D-Lux Spray Service, LLC
Registration: N23720
MSN: 400-0422
Fatalities:Fatalities: 0 / Occupants: 1
Aircraft damage: Substantial
Location:Three miles south of Monango, ND -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Departure airport:Edgeley, ND (51D)
Destination airport:Edgeley, ND (51D)
Investigating agency: NTSB
The pilot reported that he remembered completing a majority of his spray runs during the aerial-application flight and was finishing along the field's edge when the accident occurred. However, he had no recollection of the airplane colliding with the trees or terrain. Global positioning system data revealed that the airplane had descended from about 300 feet above ground level (agl) to less than 100 feet agl into a sparsely wooded area during the last 15 seconds of the flight. A postaccident examination established that the airplane's right wingtip contacted a tree before the airplane collided with terrain. The examination did not reveal any mechanical malfunctions or failures that would have precluded normal operation of the airplane. The presence of fuel throughout the engine's fuel system and the rotational damage sustained by several engine components was consistent with a sudden stoppage of an operating engine during impact.
Probable Cause: The pilot did not maintain adequate separation from a tree during the aerial-application flight.



Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 8 months
Download report: Final report

Revision history:

24-Aug-2011 21:36 RobertMB Added
08-Sep-2011 13:16 Anon. Updated [Location]
21-Dec-2016 19:26 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
27-Nov-2017 17:06 ASN Update Bot Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative]

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