ASN Wikibase Occurrence # 240790
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Friday 26 April 2019 |
| Time: | 16:15 |
| Type: |  Guimbal Cabri |
| Owner/operator: | Precision Flight Training Inc |
| Registration: | N367PA |
| MSN: | 1108 |
| Year of manufacture: | 2015 |
| Total airframe hrs: | 1733 hours |
| Engine model: | Lycoming O-360-J2A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | McMinnville, OR -
 United States of America
|
| Phase: | Landing |
| Nature: | Training |
| Departure airport: | Mc Minnville, OR (MMV) |
| Mc Minnville, OR (MMV) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that the purpose of the training flight was to complete multiple simulated, engine failure autorotations without a power recovery (full-down autorotation). After he completed his first right, 180º turn, full-down autorotation, the airspeed was "too slow." He added that the instructor told him to maintain more speed during the right turn of his second attempt, and the pilot focused on maintaining more airspeed, but the descent rate increased "due to the speed." The pilot added that, after he completed the right turn and aligned with the runway centerline, he felt that the airspeed was fast, so he flared to reduce the ground speed and increase the main rotor rpm. However, the helicopter started to sink during the flare, so due to the low altitude, the pilot leveled the helicopter to prevent a tail strike. The helicopter touched down on its skids with "substantial" ground speed and veered slightly right. The pilot applied full left cyclic and pedal input, but the helicopter continued to veer right. The helicopter exited the runway and rolled over on its left side. The fuselage and main rotor blades were substantially damaged. The pilot reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation.
The flight instructor reported that the 180º right turn aligned the helicopter with the runway centerline but at a lower altitude than was desirable because it prevented the pilot from conducting a normal flare "as the tail would have struck the runway." He added that, a normal flare before touchdown in a full-down autorotation would result in a 30º nose-up attitude, but the pilot was only able to achieve about a 10º nose-up attitude "for fear of damaging the tail."
Probable Cause: The pilot's improper landing flare during a turning, full-down autorotation, which resulted in a lower-than-normal rotor rpm, a faster-than-normal ground run speed, and the subsequent loss of directional control, a runway excursion, and a roll-over. Contributing to the accident was the flight instructor's delayed remedial action.
Accident investigation:
 |
|
Sources:
NTSB
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Sep-2020 16:56 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation