ASN Wikibase Occurrence # 296242
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| Date: | Friday 31 January 2003 |
| Time: | 12:30 LT |
| Type: |  Bell 206L-1 |
| Owner/operator: | Air Evac Ems, Inc. |
| Registration: | N27AE |
| MSN: | 45192 |
| Year of manufacture: | 1978 |
| Total airframe hrs: | 22440 hours |
| Engine model: | Rolls-Royce 250-C28B |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | West Plains, Missouri -
 United States of America
|
| Phase: | Unknown |
| Nature: | Training |
| Departure airport: | West Plains Municipal Airport, MO (KUNO) |
| West Plains Municipal Airport, MO (KUNO) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
At the completion of a simulated autorotation maneuver the main rotor severed the tailboom. The check airman reported that at approximately 20 feet above ground level he "determined the sink rate was excessive" and he decided to perform a "power recovery." The check airman stated, "I repositioned my hand, started opening the throttle while leveling the aircraft and applying a cushioning pitch pull." The helicopter impacted off the left side of the runway with "the skids aligned with the direction of travel slightly aft skid low." The check airman reported, "The aircraft rocked up onto the toes of the skids and I increased collective pitch and applied aft cyclic, when I did the main rotor impacted the tailboom severing it."
Probable Cause: The excessive descent rate that required an abrupt flare, resulting in the main rotor severing the tailboom.
Accident investigation:
 |
|
Sources:
NTSB CHI03LA062
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 13-Oct-2022 18:16 | ASN Update Bot | Added |
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