ASN Wikibase Occurrence # 288355
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| Date: | Thursday 8 July 2010 |
| Time: | 12:05 LT |
| Type: | Johnson HELICYCLE |
| Owner/operator: | Private |
| Registration: | N62AJ |
| MSN: | 3-24 |
| Total airframe hrs: | 123 hours |
| Engine model: | Solar T62 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Arlington, Washington -
 United States of America
|
| Phase: | Approach |
| Nature: | Private |
| Departure airport: | Arlington Municipal Airport, WA (AWO/KAWO) |
| Arlington Municipal Airport, WA (AWO/KAWO) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that after an uneventful flight, he entered a left downwind traffic pattern for his intended landing area. As he lowered the collective to initiate a descent, he immediately experienced a severe vibration. The pilot stated that the vibration was so violent that it was impossible to read the cockpit instruments. He raised and lowered the collective and noted no change in the vibration. The pilot then initiated an autorotation to an open field adjacent to his intended landing area. The helicopter landed hard and came to rest upright. A postaccident examination of the helicopter revealed that the tail rotor was separated from the tail boom with additional damage observed to the fuselage and main rotor blades. Flight control continuity was established throughout the helicopter's flight control system. The source of the vibration could not be determined.
Probable Cause: An undetermined airframe vibration which led to precautionary autorotation and hard landing.
Accident investigation:
 |
|
Sources:
NTSB WPR10LA336
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 04-Oct-2022 21:34 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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