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ASN Wikibase Occurrence # 224191
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Time:19:30 LT
Type:Silhouette image of generic R66 model; specific model in this crash may look slightly different    
Robinson R66
Owner/operator:Skyline Helicopters LLC
Registration: N766WC
MSN: 0397
Fatalities:Fatalities: 0 / Occupants: 1
Aircraft damage: Substantial
Location:Madison County, IL -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Departure airport:St Jacob, IL
Destination airport:St Jacob, IL
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
The pilot was performing aerial application operations and stated that he aligned the helicopter to perform a pass along the edge of a wheat field. During the pass, he noticed a power line in front of him, but the helicopter was "too close to avoid [it]." He felt the helicopter mast contact the power line; the helicopter began to "shake" violently and then impacted the ground. The pilot stated that he had performed reconnaissance of the field before beginning the application to identify power lines and other obstructions; however, he had not seen the impacted power line during the reconnaissance nor during the application. The pilot stated that there were no mechanical malfunctions or failures of the helicopter. Postaccident examination revealed that the power line was a green copper wire approximately 1/4-inch in diameter. The power line pole at the southern edge of the field was within the tree line and the field vegetation was green; it is likely that this lack of contrast contributed to the pilot's inability to identify the wire.

Probable Cause: The pilot's in-flight collision with an unmarked wire during an aerial application flight; the wire lacked contrast with the surrounding environment.


FAA register:

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

Revision history:

21-Apr-2019 16:45 gerard57 Added
21-Apr-2019 16:52 RobertMB Updated [Location, Source]
22-Apr-2019 02:17 Geno Updated [Source]
23-Apr-2019 15:30 RobertMB Updated [Location, Source]
23-Apr-2019 15:42 Geno Updated [Aircraft type, Registration, Cn, Operator, Source]
28-Mar-2021 18:52 harro Updated [Date]
29-Mar-2021 09:44 ASN Update Bot Updated [Time, Other fatalities, Departure airport, Destination airport, Source, Damage, Narrative, Category, Accident report]
29-Mar-2021 10:51 harro Updated [Source, Narrative]

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