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ASN Wikibase Occurrence # 56026
Last updated: 19 October 2019
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Date:09-MAY-1996
Time:c. 11:00 LT
Type:Silhouette image of generic H53 model; specific model in this crash may look slightly different
Sikorsky CH-53E Super Stallion
Owner/operator:Sikorsky Aircraft Corporation (for USMC)
Registration: 165250
C/n / msn: 65-644
Fatalities:Fatalities: 4 / Occupants: 4
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Location:Stratford, CT -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Nature:Test
Departure airport:Stratford, CT
Destination airport:Stratford, CT
Narrative:
Crashed on pre-delivery test flight prior to delivery to HMX-1, when hovering at c200ft above a helipad at the factory site, killing the 4 Sikorsky test crew.

The swashplate duplex bearing failed. A Navy investigation determined that there were irregularities and cracks in the chromium plating applied to the bearings to inhibit corrosion. The faulty bearing was inspected and replaced on almost 200 CH-53 helicopters at a cost of $30 million to Sikorsky. An aerospace subcontractor pleaded guilty in 2001 to charges of falsification of quality records.

Sources:

JF Baugher
https://www.nytimes.com/1996/06/23/nyregion/at-sikorsky-aircraft-a-flight-gone-wrong.html
http://www.upi.com/Archives/2000/08/29/Six-White-House-helicopters-grounded-by-Marines/8989967521600/
https://www.pprune.org/rotorheads/20264-ch-53e-swashplate-bearing-failure.html


Revision history:

Date/timeContributorUpdates
25-Jun-2014 10:05 Uli Elch Updated [Cn, Operator, Location, Phase, Source, Narrative]
25-Jun-2014 10:06 Uli Elch Updated [Operator]
12-Mar-2017 14:43 Aerossurance Updated [Time, Total fatalities, Total occupants, Other fatalities, Location, Country, Nature, Departure airport, Destination airport, Source, Embed code, Narrative]
12-Mar-2017 14:55 Aerossurance Updated [Source, Narrative]

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