ASN Wikibase Occurrence # 348685
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| Date: | Tuesday 29 August 2023 |
| Time: | 10:05 |
| Type: | Yamaha Fazer SAR |
| Owner/operator: | Yamaha Motor Corp |
| Registration: | N53GR |
| MSN: | L36-2-000113 |
| Year of manufacture: | 2021 |
| Fatalities: | Fatalities: 0 / Occupants: 0 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Reno Stead Airport (RTS/KRTS), Reno, NV -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Test |
| Departure airport: | Reno-Stead Airport, NV (KRTS) |
| Reno-Stead Airport, NV (KRTS) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The operator of the uncrewed aircraft system (UAS) reported that, he and an external emergency safety pilot were conducting an engineering test flight to fine tune the autopilot’s tail rotor yaw limits. While hovering at 50 ft agl, the operator incorrectly input a full left tail rotor command, causing the UAS to begin a rapid counterclockwise rotation. The auto pilot was unable to maintain a level attitude or stabilize the UAS during the rotation, and descended uncontrollably. The safety pilot attempted to stabilize the UAS manually, using the emergency RC controller, to no avail. The UAS impacted the surface, resulting in substantial damage to the tailboom. The operator of the UAS reported that there were no preaccident mechanical malfunctions or failures that would have precluded normal operation.
Probable Cause: The operator’s incorrect input into the ground station controller, resulting in a loss of control during flight and subsequent impact with terrain.
Accident investigation:
 |
|
Sources:
NTSB
https://data.ntsb.gov/Docket?ProjectID=192962
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 07-Dec-2023 19:59 | Captain Adam | Added |
Corrections or additions? ... Edit this accident description
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