ASN Wikibase Occurrence # 56026
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| Date: | Thursday 9 May 1996 |
| Time: | c. 11:00 LT |
| Type: |  Sikorsky CH-53E Super Stallion |
| Owner/operator: | Sikorsky Aircraft Corporation (for USMC) |
| Registration: | 165250 |
| MSN: | 65-644 |
| Fatalities: | Fatalities: 4 / Occupants: 4 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Stratford, CT -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Test |
| Departure airport: | Stratford, CT |
| Stratford, CT | |
| Confidence Rating: |  Information is only available from news, social media or unofficial sources |
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
Media:
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 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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