ASN Wikibase Occurrence # 195270
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| Date: | Sunday 7 May 2017 |
| Time: | 14:50 |
| Type: |  Bell OH-58A |
| Owner/operator: | Klinkenborg Aerial Spraying |
| Registration: | N993YC |
| MSN: | 41228 |
| Year of manufacture: | 1971 |
| Total airframe hrs: | 4580 hours |
| Engine model: | Allison T63-A-720 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Foster Pond, Bluff Precinct, Monroe County, IL -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | Millstadt, IL (1IL4) |
| , | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The helicopter pilot reported that, while maneuvering at a low altitude for an agricultural application flight, he began flying along the north side of the intended spraying field. He added that he was paying attention to the trees along the field to maintain adequate clearance. He further added that the main rotor blades struck transmission wires and that he then heard a “high pitch sound” coming from the engine and the rpm decrease. The nose pitched up, and the helicopter impacted the ground and rolled onto its right side.
The helicopter sustained substantial damage to the fuselage and empennage.
The pilot reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation.
The pilot reported that he had noticed the transmission wires earlier in flight but that he later forgot where they were located.
Probable Cause: The pilot’s failure to see and avoid transmission wires while maneuvering at a low altitude.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=993YC
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 08-May-2017 16:45 | Anon. | Added |
| 08-May-2017 17:50 | Geno | Updated [Time, Aircraft type, Registration, Cn, Operator, Location, Source, Narrative] |
| 06-Jul-2017 13:26 | Aerossurance | Updated [Location, Source, Narrative] |
| 19-Aug-2017 16:36 | ASN Update Bot | Updated [Time, Aircraft type, Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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