ASN Wikibase Occurrence # 47090
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| Date: | Tuesday 25 June 2002 |
| Time: | 12:45 |
| Type: | Sikorsky/VAT S-55QT Whisper Jet |
| Owner/operator: | Whisper Jet |
| Registration: | N2300Z |
| MSN: | 55-750 |
| Total airframe hrs: | 6894 hours |
| Engine model: | National Flight Service 331-100A-511s |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Sanford Airport, Orlando, FL -
 United States of America
|
| Phase: | Take off |
| Nature: | Test |
| Departure airport: | Sanford, FL (SFB) |
| Sanford, FL (SFB) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During a maintenance check flight of the helicopter, two auto-rotations at max gross weight with a neutral center of gravity were conducted. During the second maintenance check flight, on the initial run-up the pilot engaged the rotor clutch and heard a loud "bang". The cyclic control pulled from the pilot's hand, and the pilot rolled the throttle to ground idle to regain control the cyclic control. The helicopter rocked from left to right and rolled over on its side. Examination of the airframe found that the cyclic lateral control rod end bearing on the transmission fractured. Examination of the fractured surfaces showed features typical of overstress. No other mechanical or flight control malfunction was reported by the pilot.
Probable Cause: Failure of the cyclic lateral control rod end bearing, and subsequent dynamic rollover.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20020627X00985&key=1
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 04-Nov-2008 10:35 | ASN archive | Added |
| 19-Jul-2010 07:51 | TB | Updated [Date, Time, Aircraft type, Registration, Cn, Operator, Total fatalities, Total occupants, Other fatalities, Location, Country, Phase, Nature, Departure airport, Source, Damage, Narrative, Plane category, ] |
| 19-Jul-2010 11:03 | TB | Updated [Aircraft type] |
| 21-Dec-2016 19:24 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 09-Dec-2017 16:48 | ASN Update Bot | Updated [Cn, Operator, Nature, Departure airport, Destination airport, Source, Narrative] |
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