ASN Wikibase Occurrence # 178193
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| Date: | Saturday 5 June 2004 |
| Time: | 16:00 |
| Type: |  Schweizer 269C-1 |
| Owner/operator: | Helicopter Adventures Inc. |
| Registration: | N9421K |
| MSN: | 0141 |
| Year of manufacture: | 2002 |
| Engine model: | Lycoming HO-360 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near Brentwood, CA -
 United States of America
|
| Phase: | Landing |
| Nature: | Training |
| Departure airport: | Concord, CA (CCR) |
| Concord, CA | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The helicopter collided with terrain and rolled over while hovering above flat terrain. The student pilot was practicing hover techniques by utilizing the controls individually. While the student was manipulating the cyclic, the certified flight instructor (CFI) noticed that the friction setting on the collective had been engaged. As the CFI was focusing on the friction setting for the collective, the student made a large forward cyclic input. The helicopter responded in an extreme nose down position and the CFI attempted to counteract the student's abrupt maneuver. The helicopter impacted terrain and rolled over the nose, coming to rest on the right side. The CFI reported no preimpact mechanical malfunctions or failures with the helicopter.
Probable Cause: the student's improper use of the cyclic control, the flight instructor's inadequate supervision, and his delayed remedial action. A factor in the accident was the CFI's diverted attention.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20040622X00851&key=1
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Aug-2015 15:38 | Noro | Added |
| 21-Dec-2016 19:30 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 07-Dec-2017 18:03 | ASN Update Bot | Updated [Cn, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative] |
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