ASN Wikibase Occurrence # 353019
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| Date: | Wednesday 14 July 1999 |
| Time: | 19:30 LT |
| Type: | Continental Copters El Tomcat Mk V-A |
| Owner/operator: | Private |
| Registration: | N9086T |
| MSN: | CCI-78-1 |
| Engine model: | Lycoming VO-435 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Camden, AL -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | , AL (KPVT) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot had completed a second pass over the field he was spraying when he lost cyclic control of the helicopter. He reduced power and the helicopter impacted the ground, coming to rest on its right side. The helicopter's cyclic control rod was metallurgically examined. One end of the cyclic control rod had separated at the thread relief radius and the failure appeared consistent with an overstress separation. Hardness readings taken during an ultrasonic inspection revealed the tensile strength was below the original rod design strength.
Probable Cause: The failure of the cyclic control rod due to an overstress separation resulting from a material defect (inadequate quality of material) by the manufacturer.
Accident investigation:
 |
|
Sources:
NTSB ATL99LA107
History of this aircraft
Other occurrences involving this aircraft
| 5 August 1986 | N9086T | Glades Ground Spraying,inc. | 0 | Indiantown, FL | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 09-Mar-2024 09:32 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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