ASN Wikibase Occurrence # 360316
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Date: | Tuesday 14 June 1994 |
Time: | 17:50 LT |
Type: | Hiller UH-12L-4 Soloy |
Owner/operator: | Private |
Registration: | N67264 |
MSN: | 2509 |
Total airframe hrs: | 3846 hours |
Engine model: | Allison250-C20B |
Fatalities: | Fatalities: 0 / Occupants: 3 |
Aircraft damage: | Substantial |
Category: | Accident |
Location: | Clarkston, WA -
United States of America
|
Phase: | En route |
Nature: | Unknown |
Departure airport: | Asotin, WA |
Destination airport: | |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:WHILE IN FLIGHT THE BALLAST BAR AFT RETAINING PIN DISCONNECTED ALLOWING THE BALLAST BAR TO DISENGAGE FROM THE AFT BOLT AND SWING INTO THE PLANE OF ROTATION OF THE TAIL ROTOR BLADES. BOTH TAIL ROTOR BLADES SEPARATED AND A LOSS OF DIRECTIONAL CONTROL FOLLOWED. THE PILOT, UNABLE TO MAINTAIN FULL CONTROL OF THE ROTORCRAFT, EXECUTED AN AUTOROTATION TO A HARD LANDING.
Probable Cause: DISCONNECTION OF THE BALLAST BAR AFT RETAINING PIN. FACTOR(S) WERE: TAIL ROTOR BLADE SEPARATION AND REDUCED AIRCRAFT CONTROL.
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | SEA94LA149 |
Status: | Investigation completed |
Duration: | 5 months |
Download report: | Final report |
|
Sources:
NTSB SEA94LA149
History of this aircraft
Other occurrences involving this aircraft
31 August 2010 |
N67264 |
Valley Helicopter |
3 |
Kamiah, Idaho |
|
sub |
Loss of control |
Location
Revision history:
Date/time | Contributor | Updates |
15-Mar-2024 20:26 |
ASN Update Bot |
Added |
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