ASN Wikibase Occurrence # 200028
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| Date: | Wednesday 20 September 2017 |
| Time: | 13:09 |
| Type: |  Robinson R22 Beta |
| Owner/operator: | Revolution Aviation |
| Registration: | N7514S |
| MSN: | 3333 |
| Year of manufacture: | 2002 |
| Total airframe hrs: | 1390 hours |
| Engine model: | Lycoming O-360 J2A |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Long Beach Airport (Daugherty Field), Long Beach, California -
 United States of America
|
| Phase: | Landing |
| Nature: | Training |
| Departure airport: | Long Beach, CA (LGB) |
| Long Beach, CA (LGB) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During the final phase of a crosswind landing approach, the solo student pilot felt the helicopter shudder and heard the low rotor rpm horn sound. Instead of applying corrective control inputs, he immediately initiated an autorotation. He did not raise the collective control during the flare, as required, and the helicopter then landed hard and rolled over.
Postaccident examination did not reveal any preimpact anomalies with the airframe or engine that would have precluded normal operation, and the engine appeared to be operating at the time of ground impact.
Airframe vibration during the final phase of a landing approach is not an unusual phenomenon, and a low rotor rpm warning under high-load conditions (such as when landing with a crosswind) can also occur if rotor speed and engine power are not properly managed. The pilot improperly decided to initiate an autorotation instead of applying corrective control inputs to address the vibrations and improperly performed the landing flare.
Probable Cause: The student pilot's failure to maintain rotor rpm during the crosswind landing approach and his subsequent improper decision to initiate an autorotation instead of applying corrective control inputs after the helicopter experienced normal airframe vibration. Also causal was his failure to raise the collective during the landing flare, which resulted in a hard landing.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: 2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=N7514S
Location
Media:
At 1309 hrs. R-22 helicopter crashed while conducting training exercises @LBAirport Approx. 40 YO male transported to hosp. Minor injuries. pic.twitter.com/DJciIpIz5F
— Long Beach Fire (CA) (@lbfd) September 20, 2017
Incident did not impact flights. Contact your airlines to get info on your flight. NTSB will investigate the cause of the helo incident. https://t.co/3pec2DnVSr
— Long Beach Airport (@LBAirport) September 20, 2017
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 29-Sep-2017 16:26 | dens69 | Added |
| 29-Sep-2017 16:28 | harro | Updated [Aircraft type, Registration, Cn, Operator, Total occupants, Other fatalities, Location, Phase, Destination airport, Source, Damage, Narrative] |
| 29-Sep-2017 16:43 | Geno | Updated [Time, Aircraft type, Total occupants, Location, Destination airport, Source, Narrative] |
| 12-Aug-2018 20:24 | Dr.John Smith | Updated [Time, Operator, Location, Departure airport, Destination airport, Source, Narrative] |
| 12-Aug-2018 20:26 | Dr.John Smith | Updated [Source, Embed code] |
| 28-Nov-2018 14:45 | ASN Update Bot | Updated [Time, Operator, Departure airport, Destination airport, Source, Embed code, Narrative, Accident report, ] |
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