ASN Wikibase Occurrence # 293017
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| Date: | Thursday 22 September 2005 |
| Time: | 14:30 LT |
| Type: |  Robinson R22 Beta |
| Owner/operator: | Hawaii Pacific Aviation |
| Registration: | N82001 |
| MSN: | 1258 |
| Year of manufacture: | 1990 |
| Total airframe hrs: | 3321 hours |
| Engine model: | Lycoming O-320 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Kamuela, Hawaii, HI -
 United States of America
|
| Phase: | Unknown |
| Nature: | Training |
| Departure airport: | Kailua-Kona, HI (HKO) |
| Kamuela, HI (HMU) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
While executing a practice 180-degree full touchdown autorotation, the helicopter landed hard, spreading the landing gear skids, and the main rotor blades flexed and chopped off the tailboom. The helicopter bounced into the air, landed again, and spun several times before coming to a stop. The student initiated the maneuver at 500 feet above ground level. He started the turn abeam the runway, and when they were 90 degrees into the turn, he noted his airspeed at 65 knots and rotor rpm at 105 percent. He increased the collective to keep the main rotor from over speeding as he continued the turn. The pilot leveled off and aligned the helicopter with the runway for landing. His flight instructor told him to lower the collective, which he did, as well as inputting aft cyclic to start the flare. The instructor took over the flight controls when it became evident that the student was unable to arrest the descent. The instructor made sure the helicopter was leveled and attempted to cushion the landing prior to ground contact. The instructor indicated that the combination of a higher descent rate, higher airspeed, and density altitude led to the accident. Both pilots reported that there were no mechanical anomalies. The airport was at an altitude of 2,671 feet mean sea level, and the calculated density altitude was 4,200 feet.
Probable Cause: The student's misjudged landing flare, and the instructor's inadequate supervision and delayed remedial action. A factor in the accident was the high density altitude.
Accident investigation:
 |
|
Sources:
NTSB LAX05CA314
History of this aircraft
Other occurrences involving this aircraft
| 7 December 2011 | N817AB | Mauna Loa Helicopters | 0 | Near Kunia, Waipahu, Oahu, HI | |
sub |
| Heavy landing | ||||||
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 09-Oct-2022 15:03 | ASN Update Bot | Added |
| 15-Jun-2023 05:25 | Ron Averes | Updated |
Corrections or additions? ... Edit this accident description
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