ASN Wikibase Occurrence # 353207
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| Date: | Thursday 10 June 1999 |
| Time: | 14:00 LT |
| Type: |  Bell 47G-3B2A |
| Owner/operator: | Columbia Basin Helicopters Inc |
| Registration: | N24MP |
| MSN: | 6836 |
| Year of manufacture: | 1972 |
| Engine model: | Lycoming V0-435 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Pendleton, OR -
 United States of America
|
| Phase: | Take off |
| Nature: | Agricultural |
| Departure airport: | Pendleton, OR |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The helicopter was applying dry fertilizer from an external bucket. While taking off after refilling the bucket, the external load cable became entangled in the auger of the fertilizer truck. The pilot reported he then attempted to release the load, but the quick-disconnect hydraulic lines would not release. In the process of attempting to get the helicopter to the ground, the helicopter suffered a blade strike and impacted the ground. The pilot reported the hydraulic lines were routed over the skid or cross tube, as opposed to down the release hook and cable. The hydraulic lines were approved for a spray system installation installed per FAA Supplemental Type Certificate (STC) on the helicopter in 1993; however, the operator furnished no substantiation of FAA approval of the external bucket installation, and no record of FAA approval of the bucket installation on the helicopter was on file with the FAA.
Probable Cause: A fouled external load cable, and the pilot's operation of the helicopter with a non-approved external bucket installation, resulting in misrouted hydraulic lines and consequent malfunction of the external load release system.
Accident investigation:
 |
|
Sources:
NTSB SEA99LA098
History of this aircraft
Other occurrences involving this aircraft
| 10 December 1996 | N4758R | Wildhorse Helicopters, Inc. | 2 | Pendleton, OR | |
w/o |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 09-Mar-2024 11:29 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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