Probable cause
The pilot’s exceedance of the airplane’s never-exceed speed (VNE) during maneuvering, which resulted in the in-flight separation of the left flaperon.
NTSB analysis
The pilot reported that during a steep turn maneuver, the airplane pitched down and accelerated rapidly. The pilot stated that the airplane exceeded the never-exceed speed (VNE) and encountered aerodynamic buffeting, which resulted in the in-flight separation of the outboard portion of the left flaperon and substantial damage to the left wing. The pilot reported no preaccident mechanical failures or malfunctions that would have precluded normal operation.
Text from the NTSB. Open the NTSB docket for WPR25LA209 for the full record.
Event
- Date
- Jul 11, 2025
- Type
- Accident
- Place
- Colorado City, Arizona
- Highest injury
- None
- Weather
- Visual (VMC)
- Light
- Day
Pipistrel ALPHA TRAINER
- N-number
- N209ZM
- Category
- Airplane
- Damage
- Substantial
- Operating rule
- Part 91 (general aviation)
- Purpose of flight
- Personal
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.