ASN Wikibase Occurrence # 297889
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| Date: | Saturday 20 April 2019 |
| Time: | 18:30 LT |
| Type: |  Robinson R66 |
| Owner/operator: | Skyline Helicopters LLC |
| Registration: | N766WC |
| MSN: | 0397 |
| Year of manufacture: | 2013 |
| Total airframe hrs: | 724 hours |
| Engine model: | Rolls Royce 250-c300/A1 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | St Jacob, Illinois -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | St Jacob, IL |
| 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.
Accident investigation:
 |
|
Sources:
NTSB CEN19LA123
History of this aircraft
Other occurrences involving this aircraft
| 19 April 2019 | N766WC | Skyline Helicopters LLC | 0 | Madison County, IL | |
sub |
| Collision with pole or wires | ||||||
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Oct-2022 09:57 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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