ASN Wikibase Occurrence # 284041
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| Date: | Saturday 24 November 2007 |
| Time: | 13:40 LT |
| Type: |  Robinson R22 |
| Owner/operator: | Private |
| Registration: | N442FA |
| MSN: | 0708 |
| Year of manufacture: | 1987 |
| Total airframe hrs: | 3872 hours |
| Engine model: | Lycoming O-320 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Suffolk, Virginia -
 United States of America
|
| Phase: | Unknown |
| Nature: | Private |
| Departure airport: | Whaleyville, VA |
| Suffolk Executive Airport, VA (KSFQ) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot was circling the helicopter near friends, about 600 feet above the ground. After a few turns, as he was departing the area, the pilot noticed that the clutch light was illuminated. About 5 seconds later, he pulled the clutch circuit breaker. At the same time, the engine's rpm "sharply" increased and the main rotor rpm alarm sounded. The pilot immediately lowered the collective and "rolled on the throttle" in an attempt to increase rotor rpm. When that failed, the pilot performed an autorotation to the ground; however, during the descent, he was unable to bring the rotor rpm back into the "green" range. The helicopter landed hard, the skids spread, and a main rotor blade impacted the tail boom. Postaccident examination of the helicopter drive system revealed that the V-drive belts had rolled off the sheaves, but the reason they did so could not be determined.
Probable Cause: The V-drive belts' rolling off the sheaves for undetermined reasons, resulting in a loss of power to the rotor system, and the pilot's failure to maintain adequate rotor rpm during the autorotation, resulting in a hard landing.
Accident investigation:
 |
|
Sources:
NTSB NYC08LA043
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 30-Sep-2022 06:55 | ASN Update Bot | Added |
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