ASN Wikibase Occurrence # 293269
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| Date: | Sunday 31 July 2005 |
| Time: | 10:45 LT |
| Type: |  Schweizer 269C |
| Owner/operator: | Herlihy Helicopters, Inc. |
| Registration: | N399HF |
| MSN: | 0176 |
| Year of manufacture: | 2004 |
| Total airframe hrs: | 8166 hours |
| Engine model: | Lycoming HIO-360 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Mount Holly, New Jersey -
 United States of America
|
| Phase: | Unknown |
| Nature: | Training |
| Departure airport: | Mount Holly-South Jersey Regional Airport, NJ (LLY/KVAY) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Prior to the helicopter instructional flight, the flight instructor and the student pilot discussed a loss of engine power during takeoff. The student pilot, who had not previously performed the maneuver, thought the flight instructor was going to demonstrate it. During the flight, while the helicopter was climbing through 400-500 feet, the flight instructor advised the student of the pending simulated engine failure, and "rolled down" the throttle. The helicopter commenced an autorotation, with the flight instructor thinking the student pilot was at the controls, and the student pilot thinking the flight instructor was at the controls. During the autorotation, when the helicopter appeared to be headed for some trees, "the collective was raised to extend the glide, but the rotor rpm was decreasing and the forward airspeed had slowed also." The helicopter cleared the trees, but at 60 feet above the ground, the rotor rpm was below the power off range. The flight instructor then "got on the controls, lowered the collective, rolled on the throttle, and flared the helicopter." The helicopter continued its descent, the tail hit the ground, and the helicopter impacted the ground in a level attitude, then rolled over.
Probable Cause: The flight instructor's delayed remedial action. A factor was the flight instructor's failure to ensure that both pilots knew who was performing the maneuver.
Accident investigation:
 |
|
Sources:
NTSB IAD05LA112
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 09-Oct-2022 18:06 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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