ASN Wikibase Occurrence # 58642
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| Date: | Friday 6 February 2009 |
| Time: | 10:33 |
| Type: |  Robinson R22 Beta II |
| Owner/operator: | Helicopter Services Inc |
| Registration: | N234LA |
| MSN: | 3534 |
| Year of manufacture: | 2003 |
| Total airframe hrs: | 2299 hours |
| Engine model: | Lycoming O-360 SERIES |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Cypress, TX -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Training |
| Departure airport: | David Wayne Hooks Memorial Airport, TX (DWH/KDWH) |
| David Wayne Hooks Memorial Airport, TX (DWH/KDWH) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
While performing a 180-degree autorotation, the student pilot raised the collective in order to maintain the helicopter's rpms within normal parameters. At approximately 250 feet above ground level, the rotor rpm was allowed to decay to 95% at which time the helicopter began to sink. The lowest observed rpm was 85%. The certified flight instructor took control of the helicopter could not recover the helicopter prior to an impact with terrain. The helicopter landed hard and rolled onto its left side. Substantial crushing damage was sustained to the fuselage. Winds at the time of the accident were 190 degrees at 14 knots gusting to 30 knots.
Probable Cause: The student pilot's failure to maintain adequate main rotor rpm and the instructor's delayed remedial action.
Accident investigation:
 |
|
Sources:
NTSB
2. FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=234LA
3. http://helihub.com/2009/02/06/6-feb-09-n234la-robinson-r22-cypress-us-texas/
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 09-Feb-2009 09:54 | harro | Updated |
| 21-Feb-2009 22:48 | Frank Vorwerk | Updated |
| 01-Oct-2016 16:43 | Dr.John Smith | Updated [Location, Nature, Departure airport, Destination airport, Source, Narrative] |
| 21-Dec-2016 19:25 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 01-Dec-2017 12:11 | ASN Update Bot | Updated [Other fatalities, Departure airport, Destination airport, Source, Narrative] |
| 27-Sep-2018 21:14 | Dr.John Smith | Updated [Aircraft type, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
| 25-Feb-2022 23:54 | Captain Adam | Updated [Location, Departure airport, Destination airport, Source] |
Corrections or additions? ... Edit this accident description
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