ASN Wikibase Occurrence # 43681
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| Date: | Wednesday 12 September 2007 |
| Time: | 18:30 |
| Type: |  Fairchild Hiller FH-1100 |
| Owner/operator: | Leading Edge Helicopters Inc |
| Registration: | N313BG |
| MSN: | 190 |
| Year of manufacture: | 1970 |
| Total airframe hrs: | 2185 hours |
| Engine model: | Allison Engine 250-C20B |
| Fatalities: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Hosston, LA -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Vicksburg, MS (VKS) |
| Paris, TX (PRX) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The commercial pilot and pilot rated passenger were on a 1,620-nautical mile cross-country flight following the purchase of the accident helicopter. Following a fuel stop, they had progressed approximately 180 miles when the helicopter's main rotor and rotor hub assembly separated from the upper mast. The helicopter subsequently entered an uncontrolled descent and impacted the ground. There were no eyewitnesses to the accident. Examination of the main rotor mast fracture surfaces revealed signatures consistent with mast bumping. Though there was evidence of a mast bumping event, the initiating event is unknown. Examination of the wreckage disclosed no anomalies that would have prevented normal system operation and the engine displayed evidence of rotation at the time of ground impact. The cockpit also exhibited damage consistent with main rotor contact. On the day of the accident, the outer bands of a tropical storm made landfall on the Louisiana coast. However, automated weather observing systems located inland near the accident site were reporting visual meteorological conditions at the time of the accident.
Probable Cause: The in-flight separation of the main rotor mast while in cruise flight following a mast bumping event. The reason for the mast bumping event was not determined.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20070927X01463&key=1
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 28-Oct-2008 00:45 | ASN archive | Added |
| 21-Dec-2016 19:24 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 04-Dec-2017 18:51 | ASN Update Bot | Updated [Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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