ASN Wikibase Occurrence # 288851
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| Date: | Thursday 15 September 2011 |
| Time: | 15:50 LT |
| Type: |  Robinson R44 |
| Owner/operator: | |
| Registration: | N828PM |
| MSN: | 1493 |
| Year of manufacture: | 2005 |
| Total airframe hrs: | 1381 hours |
| Engine model: | Lycoming O-540F1 SERIE |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Ocate, New Mexico -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Ocate, NM |
| Ocate, NM | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The helicopter was about 80 to 150 feet above ground level with the airspeed about 10 to 15 knots, when the pilot got a low rotor rpm warning, and the engine lost power. The pilot lowered the collective pitch lever, put in right pedal, and kept 'full throttle.†The helicopter made two to three complete 360 degree turns before it impacted terrain. According to a carburetor icing probability chart, an engine operating in the ambient conditions at the time of the accident could expect a serious risk of carburetor icing while at cruise power. The pilot reported that he had possibly failed to use enough carburetor heat and he thought that was the reason for the loss of engine power. An examination of the helicopter showed no preimpact mechanical failures or anomalies that would have precluded normal operation.
Probable Cause: The pilot's failure to apply carburetor heat, which resulted in the formation of carburetor ice and a partial loss of engine power.
Accident investigation:
 |
|
Sources:
NTSB CEN11LA648
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Oct-2022 06:57 | ASN Update Bot | Added |
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