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ASN Wikibase Occurrence # 195270
Last updated: 15 October 2021
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Type:Silhouette image of generic B06 model; specific model in this crash may look slightly different
Bell OH-58A
Owner/operator:Klinkenborg Aerial Spraying
Registration: N993YC
MSN: 71-20367
Fatalities:Fatalities: 0 / Occupants: 1
Aircraft damage: Substantial
Location:Foster Pond, Bluff Precinct, Monroe County, IL -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Departure airport:Millstadt, IL (1IL4)
Destination airport:,
Investigating agency: NTSB
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.



FAA register:

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

Revision history:

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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