ASN Wikibase Occurrence # 366465
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| Date: | Wednesday 1 August 1990 |
| Time: | 07:30 LT |
| Type: |  Bell 47G-3B-1 |
| Owner/operator: | Ashley Cranberry Enterprise |
| Registration: | N34691 |
| MSN: | 3822 |
| Total airframe hrs: | 5306 hours |
| Engine model: | LYCOMING TV0-435-B1A |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Hanson, MA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | Wareham, MA |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT STATED THAT WHILE HE WAS OPERATING THE HELICOPTER AT 100 FEET ABOVE THE GROUND IN AERIAL APPLICATION ACTIVITIES, THERE WAS A LOSS OF TAIL ROTOR CONTROL. THE HELICOPTER ENTERED A 'SLOW SPIN' AND DESCENDED INTO THE GROUND. POST-ACCIDENT INVESTIGATION REVEALED THAT THE TAIL ROTOR DRIVE SHAFT WAS 'SHEARED OFF' BETWEEN THE NUMBER 5 AND NUMBER 6 BEARINGS.
Probable Cause: THE PILOT'S LOSS OF CONTROL OF THE HELICOPTER DUE TO THE FAILURE OF THE TAIL ROTOR DRIVE SHAFT.
Accident investigation:
 |
|
Sources:
NTSB NYC90DNA04
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 21-Mar-2024 05:41 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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