ASN Wikibase Occurrence # 385838
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| Date: | Thursday 31 May 2001 |
| Time: | 11:36 LT |
| Type: |  Bell 47G-4A |
| Owner/operator: | |
| Registration: | N110DT |
| MSN: | RL-691-43 |
| Total airframe hrs: | 2717 hours |
| Engine model: | Lycoming VO-540-B1B3 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Buttonwillow, CA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | Unknown, CA |
| Buttonwillow, CA (L62) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During the aerial application turn-to-reverse direction to continue spraying chemicals, the helicopter began settling with power and collided with the ground. According to the pilot, "near triple digit" temperatures, a wind shift, and a steep 180-degree turn resulted in the power settling that could not be arrested prior to ground impact. The pilot also reported that the temperature over the unplanted field where he was executing the reverse turn was higher than over the corn field he had been spraying.
Probable Cause: The pilot's inadequate in-flight planning that resulted in settling with power during an aerial application turn-to-reverse direction and collision with the ground. Factors were high density altitude and a wind shift.
Accident investigation:
 |
|
Sources:
NTSB LAX01LA196
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Apr-2024 08:26 | ASN Update Bot | Added |
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