ASN Wikibase Occurrence # 134924
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| Date: | Tuesday 22 June 2004 |
| Time: | 10:00 |
| Type: |  Bell 206B-3 JetRanger III |
| Owner/operator: | Department of Public Safety |
| Registration: | N3902W |
| MSN: | 3233 |
| Year of manufacture: | 1981 |
| Total airframe hrs: | 8543 hours |
| Engine model: | Allison 250-C20B |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Graysville, AL -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Unknown |
| Departure airport: | Bessemer, AL (EKY) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot stated he was maneuvering the helicopter in a right turn at 200 feet AGL between 20 to 25 knots with a tail wind. The helicopter started an uncommanded turn to the right. The pilot immediately applied left anti-torque pedal and increased power. The un-commanded turn rate increased. The pilot decreased power, lowered the nose, and applied right cyclic. The turn rate increased. The helicopter descended, collided with trees, and a road while turning to the right collapsing the right skid, and rolled over on its left side. When the pilot was asked if he experienced any mechanical problems with the helicopter before the accident, the pilot stated no. When the pilot was asked what happened, the pilot stated "he encountered a loss of tail rotor effectiveness". When the pilot was asked if he had any training in regards to loss of tail rotor effectiveness, he stated, "only open discussion."
Probable Cause: The pilot's inadequate compensation for a tailwind and his failure to maintain directional control resulting in a loss of tail rotor effectiveness. A factor was the pilot's improper in-flight decision to hover with a tailwind.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20040624X00862&key=1
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 21-Dec-2016 19:26 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 07-Dec-2017 18:07 | ASN Update Bot | Updated [Operator, Other fatalities, Nature, Departure airport, Source, Narrative] |
| 14-Mar-2021 16:14 | TB | Updated [Aircraft type] |
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