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ASN Wikibase Occurrence # 89884
Last updated: 23 April 2020
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Date:04-FEB-2011
Time:14:22
Type:Silhouette image of generic H500 model; specific model in this crash may look slightly different
Hughes 369
Owner/operator:Wilson Construction Company
Registration: N416WC
C/n / msn: 0268E
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Category:Accident
Location:field in Rio Linda, Sacramento, CA -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Nature:Unknown
Departure airport:Elverta, CA
Destination airport:Elverta, CA
Investigating agency: NTSB
Narrative:
A lineman was on the skid of the helicopter installing high-power electrical lines on a power line structure. The pilot positioned the helicopter about 30 to 50 feet from the structure. The main rotor blades made contact with an installation rope, which then wrapped around the mast as the blades pulled it in. The pilot lost control of the helicopter, and it began an uncontrolled descent to the ground. A postaccident examination of the airframe and engine revealed no mechanical anomalies that would have precluded normal operation. It is likely that the pilot misjudged the distance between the rotor blades and the installation rope.
Probable Cause: The pilot did not maintain rotor blade clearance from an installation rope while maneuvering to install power lines.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20110204X91152&key=1


Revision history:

Date/timeContributorUpdates
05-Feb-2011 13:23 Fusko Added
05-Feb-2011 13:24 harro Updated [Time, Location, Embed code, Narrative]
08-Feb-2011 12:22 bizjets101 Updated [Registration, Cn, Phase, Source, Embed code, Narrative]
21-Dec-2016 19:25 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
27-Nov-2017 16:43 ASN Update Bot Updated [Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative]

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