ASN Wikibase Occurrence # 154317
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| Date: | Tuesday 19 March 2013 |
| Time: | 18:30 |
| Type: |  Schweizer 269C-1 (300CB) |
| Owner/operator: | Bristow Academy Inc |
| Registration: | N2099S |
| MSN: | 0345 |
| Year of manufacture: | 2008 |
| Total airframe hrs: | 3284 hours |
| Engine model: | Lycoming HIO-360-G1A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Highway US-1 near Titusville, FL -
 United States of America
|
| Phase: | Landing |
| Nature: | Training |
| Departure airport: | Titusville, FL (TIX) |
| Titusville, FL (TIX) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Shortly after takeoff, the student pilot notified an air traffic controller that the helicopter was vibrating and requested to return to the airport. The flight instructor reported that, about 1/2-mile east of the airport, he and the pilot heard a loud "bang." In response, the student pilot lowered the collective and then the flight instructor took over the controls and entered an autorotation. The helicopter touched down hard on a road, which resulted in substantial damage to the tailboom and diagonal strut. Postaccident examinations revealed that the engine crankcase was breached and that the No. 2 cylinder rod had failed. Further examinations of the engine revealed evidence that the center main bearing had spun in the bore and moved laterally. This movement covered the oil feed hole that supplied oil to the No. 2 connection rod and led to its failure due to oil starvation.
Probable Cause: An engine failure due to the separation of the engine crankcase, which resulted from the lateral movement of the center main bearing and the subsequent blocking of the oil feed hole that supplied oil to the No. 2 connecting rod, which then led to its failure due to oil starvation.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=2099S
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 21-Mar-2013 06:41 | Geno | Added |
| 21-Dec-2016 19:28 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 28-Nov-2017 14:14 | ASN Update Bot | Updated [Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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