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ASN Wikibase Occurrence # 76444
Last updated: 7 December 2021
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Date:02-MAR-1999
Time:11:20
Type:Silhouette image of generic S64 model; specific model in this crash may look slightly different
Sikorsky S-64E (CH-54A)
Owner/operator:Erickson Air Crane
Registration: N194AC
MSN: 64-017
Fatalities:Fatalities: 0 / Occupants: 2
Other fatalities:1
Aircraft damage: None
Category:Accident
Location:Shelton, WA -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Nature:External load operation
Departure airport:
Destination airport:
Investigating agency: NTSB
Narrative:
The pilot of the aero-logging helicopter had lowered a multiple-log load onto the landing site, hit the release switch to release the two choker cables, and then began to move away from the area. One of the choker lines momentarily failed to release, resulting in one end of one of the logs lifting into the air and then falling back to the ground. One of the ground crew members entered the landing area after the logs were initially lowered to the ground, but prior to the release of the second cable. When the end of the log lifted into the air and fell back to the ground, it fell on the crew member, inflicting fatal injuries. It was the opinion of some of the other crew members that the victim never noticed that the second cable had not yet released or that the end of the log was being lifted back into the air. According to Washington Administrative Code, Chapter 296-54, 'Logs shall be laid on the ground and the helicopter will be completely free of the choker()s) before workers approach the logs.'
Probable Cause: The failure of the victim to follow the procedure that required him to make sure that all choker lines had separated from the helicopter's release mechanism prior to entering the landing (collection area).

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20001205X00392&key=1


Images:

Photo of N194AC courtesy AirHistory.net


Corfu - Ioannis Kapodistrias (LGKR / CFU)
6 August 2007; (c) Michiel van Herten

Revision history:

Date/timeContributorUpdates
22-Aug-2010 02:56 Alpine Flight Added
19-Mar-2011 13:24 TB Updated [Date, Time, Aircraft type, Registration, Cn, Operator, Total fatalities, Location, Phase, Nature, Source, Damage, Narrative]
21-Dec-2016 19:25 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
26-Nov-2017 10:54 ASN Update Bot Updated [Cn, Operator, Total fatalities, Total occupants, Other fatalities, Nature, Source, Narrative]

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