ASN Wikibase Occurrence # 135287
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| Date: | Tuesday 29 October 2002 |
| Time: | 09:30 |
| Type: |  Hughes 369D |
| Owner/operator: | Cherry Helicopters, Inc. |
| Registration: | N220AL |
| MSN: | 1090606D |
| Year of manufacture: | 1979 |
| Total airframe hrs: | 7972 hours |
| Engine model: | Allison 250-C20 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Kaaawa, Oahu, HI -
 United States of America
|
| Phase: | Take off |
| Nature: | Unknown |
| Departure airport: | Kahuku, HI |
| Kaaawa, Oahu, HI | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The helicopter rolled over during an attempted takeoff from a sloping landing zone on a ridgeline composed of soft soil. The pilot's mission was to transport passengers to the remote landing site on top of a ridge. Upon arrival, the pilot performed a reconnaissance of the area and landed on a part of the ridge that sloped to the right. The pilot reported that the wind was strong and gusty, but was most directly on the nose of the helicopter. The pilot said he maintained full flight rotor rpm and completely lowered the collective pitch, then the helicopter settled right skid downslope. He noted that the ground was soft. One of the passengers, who was seated directly behind the pilot, disembarked, which left two passengers on the right side of the helicopter. Then the pilot applied collective pitch, and the helicopter began to roll right. The pilot decreased the collective and applied left cyclic, but this had no effect. The helicopter rolled over and slid down the steep incline. A search and rescue pilot who landed at the landing zone a short time after the accident reported that the wind speed was about 25 knots, and it was gusting to 30 knots.
Probable Cause: Dynamic rollover during an attempted takeoff, due to the combined effects of the soft sloping terrain and the pilot's failure to redistribute the passengers to a more favorable lateral CG condition.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20021104X05429&key=1
History of this aircraft
Other occurrences involving this aircraft
| 16 November 1992 | N220AL | Haverfield Corporation | 0 | Carlsbad, CA | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 21-Dec-2016 19:26 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 09-Dec-2017 17:55 | ASN Update Bot | Updated [Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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