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ASN Wikibase Occurrence # 42731
Last updated: 30 May 2021
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Date:20-APR-1990
Time:10:30
Type:Silhouette image of generic UH1 model; specific model in this crash may look slightly different
Bell 205A-1
Owner/operator:Heli Jet Corporation
Registration: N67HJ
MSN: 30193
Fatalities:Fatalities: 1 / Occupants: 1
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:Moncks Corner, South Carolina -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Nature:External load operation
Departure airport:Moncks Corner, South Carolina
Destination airport:Moncks Corner, South Carolina
Investigating agency: NTSB
Narrative:
The helicopter was being used for logging using a long line. A load of logs was returned to the logging lane because they were too heavy. As the helicopter was brought to a hover and the load 'pickled', the ground crew saw the helicopter go out of control. The helicopter's nose pitched up, it rolled left and fell to the ground from about 200 ft.

An examination of the wreckage revealed that none of the main rotor pillow block bolts were present. Damage to the main rotor was consistent with a failure of one of the bolts in-flight which resulted in separation of the main rotor from the mast. Laboratory examination of the main rotor revealed that the manufacturer's overhaul procedures were not followed which probably allowed corrosion of the bolts to occur. The procedures were changed to preclude re-use of pillow block bolts during overhaul.

The NTSB determined the probable cause to be: The in-flight separation of the main rotor because of the failure of a pillow block bolt and the failure of the operator/repair station to follow the overhaul procedures.

Sources:

1. NTSB Identification: ATL90FA100 at http://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20001212X22848&key=1&queryId=2f239164-455b-455a-9869-e75a48039aef&pgno=1&pgsize=50
2.FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=67H


Revision history:

Date/timeContributorUpdates
24-Oct-2008 10:30 ASN archive Added
15-Apr-2016 23:19 Dr.John Smith Updated [Time, Location, Nature, Departure airport, Destination airport, Source, Narrative]
21-Dec-2016 19:24 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]

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