Probable cause
The pilot under instruction's failure to maintain directional control and the flight instructor's delayed remedial action.
NTSB analysis
The flight instructor in the skid-equipped helicopter reported that the purpose of the flight was to conduct an aircraft transition flight. The pilot under instruction performed a touchdown autorotation on the asphalt runway. The helicopter touched down in a level attitude just right of the centerline and then slid on its skids off the right side of the runway into grass. The helicopter spun right and rolled onto its left side.
The helicopter sustained substantial damage to the main and tail rotor drive systems.
Both pilots reported that there were no mechanical malfunctions or failures with the helicopter that would have precluded normal operation.
Text from the NTSB. Open the NTSB docket for GAA19CA056 for the full record.
Event
- Date
- Nov 13, 2018
- Type
- Accident
- Place
- Newberg, Oregon
- Nearest airport
- Chehalem Airpark (17S)
- Highest injury
- None
- Weather
- Visual (VMC)
- Light
- Day
Guimbal CABRI
- N-number
- N370PA
- Category
- Helicopter
- Year built
- 2014
- Damage
- Substantial
- Operating rule
- Part 91 (general aviation)
- Purpose of flight
- Instructional
From the NTSB aviation accident database: N-registered aircraft, events since 2008, data through Oct 28, 2026. The file is published monthly, so the latest weeks are incomplete and recent records can change. The official source is the NTSB aviation investigation search. CheckAero is independent and not affiliated with the NTSB.