ASN Wikibase Occurrence # 212483
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| Date: | Friday 6 October 2017 |
| Time: | 07:20 |
| Type: |  Robinson R22 BETA |
| Owner/operator: | Cass Aviation LLC |
| Registration: | N878MC |
| MSN: | 3782 |
| Year of manufacture: | 2005 |
| Total airframe hrs: | 5259 hours |
| Engine model: | Lycoming O-360 SERIES |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | North Las Vegas Airport, Las Vegas, Clark County, Nevada -
 United States of America
|
| Phase: | Landing |
| Nature: | Training |
| Departure airport: | North Las Vegas, Las Vegas, NV (VGT/KVGT) |
| North Las Vegas, Las Vegas, NV (VGT/KVGT) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The purpose of the training flight was to practice auto-rotations with power recovery. The flight instructor reported that, as the helicopter descended through about 40 ft, he instructed the student pilot to increase the landing flare and roll on throttle for power recovery. As the helicopter continued to quickly descend to about 8 ft, they raised the collective, and the flight instructor felt resistance in the collective. The rpms began to drag down, and he tried rolling on the throttle to bring the rpms back up. The flight instructor reported that he believed that the student had tensed up on the throttle and collective as he tried to keep the helicopter level and cushion for the landing.
The student pilot reported that, in hindsight, he was pulling up on the collective, but his hand (wrist) was locked, which prevented the governor to roll on and increase power.
The helicopter subsequently landed hard, which resulted in substantial damage the fuselage. The flight instructor reported that there were no pre-accident mechanical malfunctions or failures with the helicopter that would have precluded normal operation
Probable Cause: The student pilot’s tension on the flight control at a low level during an autorotation, which did not allow sufficient time for the flight instructor to correct and recover control before the hard landing.
Accident investigation:
 |
|
Sources:
NTSB
2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=N878MC
3. http://www.kathrynsreport.com/2018/04/robinson-r22-beta-n878mc-accident.html.
4. https://www.reddit.com/r/NTSB_database/comments/79vktf/nonfatal_10052017_robinson_helicopter_r22_beta/
5. https://en.wikipedia.org/wiki/North_Las_Vegas_Airport
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 22-Jun-2018 07:38 | ASN Update Bot | Added |
| 12-Aug-2018 19:51 | Dr.John Smith | Updated [Operator, Location, Phase, Departure airport, Destination airport, Source, Narrative] |
Corrections or additions? ... Edit this accident description
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