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ASN Wikibase Occurrence # 196596
Last updated: 26 February 2021
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Type:Silhouette image of generic AT6T model; specific model in this crash may look slightly different
Air Tractor AT-602
Owner/operator:Quad Rabbit Inc
Registration: N4257R
C/n / msn: 602-1146
Fatalities:Fatalities: 1 / Occupants: 1
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Location:Craighead County, Cash, AR -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Departure airport:Cash, AR (PRI)
Destination airport:Cash, AR (PRI)
Investigating agency: NTSB
The commercial pilot was conducting his sixth agricultural load application of the day. Witnesses observed the airplane make a low-altitude turn and subsequently enter a spin with a nose-low attitude . The airplane subsequently impacted a rice field adjacent to the field being treated.

Postaccident examination of the airframe, engine, and propeller revealed no evidence of any preimpact mechanical malfunctions or anomalies that would have precluded normal operation.

The pilot's autopsy revealed that he had severe coronary artery disease with evidence of associated heart muscle injury. No evidence was found indicating that the pilot was aware of his health issues. The coronary artery disease increased the pilot's risk of a cardiac event, which would have resulted in shortness of breath, dizziness, lightheadedness, or an irregular heart rhythm (arrhythmia) with decreased cardiac output and loss of consciousness. The combination of the normal stress associated with low-altitude maneuvering and decreased cardiac output likely resulted in a sudden decrease of blood flow to the brain and the pilot's incapacitation, which resulted in his loss of airplane control.

Probable Cause: The pilot's incapacitation due to a cardiac event, which resulted in a loss of airplane control.



FAA register:

Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 8 months
Download report: Final report

Revision history:

09-Jul-2017 21:29 Geno Added
22-Mar-2019 19:10 ASN Update Bot Updated [Time, Departure airport, Destination airport, Source, Damage, Narrative, Accident report, ]

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