ASN Wikibase Occurrence # 189048
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| Date: | Tuesday 2 August 2016 |
| Time: | 10:27 |
| Type: |  Robinson R22 |
| Owner/operator: | Private |
| Registration: | N22UH |
| MSN: | 4676 |
| Year of manufacture: | 2015 |
| Total airframe hrs: | 882 hours |
| Engine model: | Lycoming O-360-J2A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near Prescott Municipal Airport (Ernest A. Love Field) Prescott, AZ -
 United States of America
|
| Phase: | Landing |
| Nature: | Training |
| Departure airport: | Prescott, AZ (PRC) |
| Prescott, AZ (PRC) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The flight instructor and student pilot were practicing straight-in autorotations in the helicopter. During the autorotative descent, about 400 ft above ground level with the student at the controls, the instructor noticed a high rate of descent and a decay in main rotor rpm. The instructor told the student that he had the controls and started applying collective and throttle to recover rpm. He felt the collective go up and again told the student that he had the controls. The instructor was unable to arrest the descent before the helicopter landed hard and rolled over. The instructor reported that there were no pre-impact mechanical malfunctions or failures with the airframe or engine that would have precluded normal operation. He further stated that the accident could have been prevented if he had stayed ahead of his student and the helicopter.
Probable Cause: The flight instructor’s delayed remedial action to address a low rotor rpm condition, which resulted in an excessive descent rate and a subsequent hard landing.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: 2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=22UH
4. https://flightaware.com/photos/view/6705710-c333c1a87a95b8916ccc390d0eb37c3f40035513/aircraft/N22UH/sort/votes/page/1/size/fullsize
Location
Images:
Photo: NTSB
Media:
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-Aug-2016 18:30 | Iceman 29 | Added |
| 03-Aug-2016 18:43 | Geno | Updated [Location, Phase, Departure airport, Destination airport, Source] |
| 19-Oct-2016 17:59 | Dr.John Smith | Updated [Time, Operator, Location, Departure airport, Destination airport, Source, Narrative] |
| 19-Oct-2016 18:00 | Dr.John Smith | Updated [Source] |
| 16-Sep-2018 19:11 | ASN Update Bot | Updated [Time, Operator, Departure airport, Destination airport, Source, Embed code, Damage, Narrative, Accident report, ] |
| 17-Sep-2018 19:13 | harro | Updated [Source, Embed code, Narrative, Photo] |
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