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ASN Wikibase Occurrence # 33082
Last updated: 30 January 2020
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Date:30-APR-1982
Time:
Type:Silhouette image of generic S76 model; specific model in this crash may look slightly different
Sikorsky S-76A
Owner/operator:Okanagan Helicopters
Registration: C-GIMF
C/n / msn: 760038
Fatalities:Fatalities: 13 / Occupants: 13
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Location:Gulf of Thailand -   Thailand
Phase: En route
Nature:Non Scheduled Passenger
Departure airport:Songkhla
Destination airport:Erawan LQ
Narrative:
Crashed into sea following loss of tail rotor control. A tail rotor control cable had been routed over a stainless steel grommet in the area of pulleys (2) under the Main Gear Box. The bracket holding these pulleys did not allow for visual confirmation of the routing. With a broken tail rotor control cable at that time, the tail rotor went immediately to full pitch, a condition from which a recovery was not possible.

A self centering device like that of the H-60 was later added which, under the same circumstances, would result in the T/R centering allowing a run-on landing to be performed. In September 1983 a US-registered S-76 (N-521AC) ditched in Lake Michigan following loss of tail rotor control.

Sources:

World Airliner Crashes/Terry Denham
https://www.flightglobal.com/FlightPDFArchive/1982/1982%20-%201844.PDF


Revision history:

Date/timeContributorUpdates
27-Sep-2008 01:00 ASN archive Added
11-Jun-2010 12:20 TB Updated [Aircraft type, Other fatalities, Phase, Nature, Source, Narrative]
02-Jun-2012 01:51 Anon. Updated [Departure airport, Destination airport]
01-Nov-2016 13:30 Owenthai Updated [Narrative]
12-Jul-2019 21:31 Aerossurance Updated [Nature, Source, Narrative]

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