ASN Wikibase Occurrence # 19569
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| Date: | Thursday 1 May 2008 |
| Time: | 18:30 |
| Type: |  Robinson R22 Beta |
| Owner/operator: | Guidance Helicopters, Inc. |
| Registration: | N331MD |
| MSN: | 2886 |
| Year of manufacture: | 1998 |
| Total airframe hrs: | 6129 hours |
| Engine model: | Lycoming O-360-J2A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | 9 miles from Prescott, Arizona -
 United States of America
|
| Phase: | En route |
| Nature: | Training |
| Departure airport: | Prescott, AZ (PRC) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
This was the certificated flight instructor's (CFI) first instructional flight with this new primary student. They did a preflight inspection of the helicopter together, and departed for the practice area. Once the student had a general understanding of the controls, they did an approach to a point on the ground that terminated in a hover. The CFI was letting the student manipulate the controls more and more during the hover. The CFI positioned the helicopter for a slight right quartering headwind to compensate for translating tendencies. During hover, the helicopter exhibited a pendulum oscillation that is common for new students learning to hover. During one of the right lateral oscillations, the helicopter unexpectedly lost altitude. The right skid contacted the ground, and the helicopter rolled onto its right side. Within seconds, it caught on fire. Both pilots exited immediately. The CFI stated that the airplane and engine had no mechanical failures or malfunctions during the flight.
Probable Cause: The instructor's inadequate supervision and delayed remedial action that resulted in ground contact and a rollover.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: 2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=331MD
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 19-May-2008 04:29 | Fusko | Added |
| 07-Jun-2008 23:30 | Fusko | Updated |
| 30-Sep-2016 13:38 | Dr.John Smith | Updated [Time, Operator, Location, Phase, Nature, Departure airport, Destination airport, Source, Narrative] |
| 21-Dec-2016 19:14 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 21-Dec-2016 19:16 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 21-Dec-2016 19:20 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 03-Dec-2017 10:51 | ASN Update Bot | Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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