ASN Wikibase Occurrence # 286374
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| Date: | Monday 7 January 2008 |
| Time: | 18:45 LT |
| Type: |  Bell 407 |
| Owner/operator: | Volusia Co Sheriff's Department |
| Registration: | N801DS |
| MSN: | 53504 |
| Year of manufacture: | 2001 |
| Total airframe hrs: | 3895 hours |
| Engine model: | Rolls Royce 250-C47B |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | DeLand, FL -
 United States of America
|
| Phase: | En route |
| Nature: | Ferry/positioning |
| Departure airport: | DeLand Municipal Airport, FL (KDED) |
| DeLand, FL | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The helicopter was cruising at 120 knots and 700 feet above the ground. About 2 city blocks from the intended destination, the pilot heard a loud "bang," and the helicopter then yawed left about 30 degrees. The pilot initiated an autorotation to a nearby road that was under construction. While attempting to land, the pilot maneuvered the helicopter to avoid construction equipment, and during the landing the main rotor blades contacted the vertical stabilizer. After the helicopter came to rest, the pilot observed a fire in the engine compartment, which he extinguished using the on-board fire extinguisher. Post-accident examination of the engine revealed that one of the blades on the third stage turbine wheel had failed in fatigue, resulting in an over-speed and subsequent burst of the first stage turbine wheel. The root cause of the blade failure could not be determined.
Probable Cause: A total loss of engine power due to the fatigue failure of a third stage turbine wheel blade.
Accident investigation:
 |
|
Sources:
NTSB NYC08LA077
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-Oct-2022 09:46 | ASN Update Bot | Added |
| 30-May-2023 01:54 | Ron Averes | Updated |
Corrections or additions? ... Edit this accident description
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