Stemme S 10
Sonoma, CA — May 3, 2019
Event Information
| Date | May 3, 2019 |
| Event Type | ACC |
| NTSB Number | GAA19CA241 |
| Event ID | 20190503X92424 |
| Location | Sonoma, CA |
| Country | USA |
| Coordinates | 38.25750, -122.43417 |
| Airport | Sonoma Skypark |
| Highest Injury | MINR |
Aircraft
| Make | Stemme |
| Model | S 10 |
| Category | GLI |
| FAR Part | 091 |
| Aircraft Damage | SUBS |
Conditions
| Light Condition | DAYL |
| Weather | VMC |
Injuries
| Fatal | 0 |
| Serious | 0 |
| Minor | 1 |
| None | 0 |
| Total Injured | 1 |
Event Location
Probable Cause
The pilot's improper decision to land with a tailwind and his failure to maintain a proper approach, which resulted in a long landing, a runway overrun, and impact with a tree.
Full Narrative
The pilot of a power-glider reported that, while on final, he observed that his ground speed was higher than his indicated airspeed. Upon landing on the first ¼ of the 2700 ft runway, the powered-glider veered left and he corrected with left brake and rudder, and the power-glider overran the runway, and impacted a tree.
The powered-glider sustained substantial damage to the fuselage and the left wing.
The pilot reported that there were no preaccident mechanical failures or malfunctions with the powered-glider that would have precluded normal operation.
The automated weather observation station located 6 NM east of the accident reported that, about the time of the accident, the wind was variable at 5 knots. The powered-glider was landing on runway 26. The pilot further reported that he was later told he touched down beyond halfway down the runway and the pilot recommended not landing with a tailwind.
About This NTSB Record
This aviation event was investigated by the National Transportation Safety Board (NTSB). NTSB investigates all U.S. civil aviation accidents to determine probable cause and issue safety recommendations to prevent future accidents.