ASN Wikibase Occurrence # 355160
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Date: | Sunday 5 October 1997 |
Time: | 12:30 LT |
Type: | Hiller UH-12C |
Owner/operator: | Private |
Registration: | N49983 |
MSN: | 850 |
Total airframe hrs: | 5100 hours |
Engine model: | Franklin 6V335-5D |
Fatalities: | Fatalities: 0 / Occupants: 2 |
Aircraft damage: | Substantial |
Category: | Accident |
Location: | Bennington, VT -
United States of America
|
Phase: | Unknown |
Nature: | Training |
Departure airport: | (5B5) |
Destination airport: | |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:The certificated flight instructor (CFI)/owner had been demonstrating how to hover a helicopter to a student pilot. When the student pilot attempted to hover the helicopter, it began to roll right. The CFI then took hold of his controls, and the top of his cyclic stick detached. The helicopter then rolled right and collided with the ground. Examination revealed that the cyclic stick had been replaced with a military style cyclic. The owner reported that the cyclic had been cut down by removing a section of the cyclic, and the cyclic detached at the repaired joint. A review of the maintenance records did not reveal who or when the modification was performed.
Probable Cause: The failure of the cyclic control due to an improper modification by the pilot/owner.
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | NYC98LA006 |
Status: | Investigation completed |
Duration: | 2 years and 8 months |
Download report: | Final report |
|
Sources:
NTSB NYC98LA006
History of this aircraft
Other occurrences involving this aircraft Revision history:
Date/time | Contributor | Updates |
12-Mar-2024 08:57 |
ASN Update Bot |
Added |
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