CircumFlightN245AB accident
NTSB CEN14CA280 · 2014-06-06 · Wallis, TX · near TE71
Docket — crew, injuries and powerplant
Summary
The glider pilot reported that he was to be towed by a tow plane and make a "no assist launch." The glider's wings were loosely supported by wing stands and the tow rope was attached from the tow plane to the glider. When the slack was out of the tow rope, the glider pilot made a radio call "Go, go, go" to the tow pilot. The glider began to lift off from the grass runway when pilot noticed that the tow plane moved left laterally from what he assumed was a gust of wind. The tow pilot corrected back to the right and the glider pilot readied to do the same. When the glider entered the area of suspected wind gust, it suddenly ascended about 8 feet and the left wing lifted. The pilot applied full left aileron and left rudder and forward pressure on the control stick in order to descend and regain the correct flight path. The left wing continued to lift so the glider pilot released the tow rope as the glider made a 30 degree right turn. The glider exited the area of suspected wind gust and the glider pilot was unable to maintain directional control and the glider impacted the runway. The glider sustained substantial damage to the rear fuselage and empennage. He also reported that there were no mechanical malfunctions or failures with the glider that would have precluded normal operation.
Full narrative
The glider pilot reported that he was to be towed by a tow plane and make a "no assist launch." The glider's wings were loosely supported by wing stands and the tow rope was attached from the tow plane to the glider. When the slack was out of the tow rope, the glider pilot made a radio call "Go, go, go" to the tow pilot. The glider began to lift off from the grass runway when pilot noticed that the tow plane moved left laterally from what he assumed was a gust of wind. The tow pilot corrected back to the right and the glider pilot readied to do the same. When the glider entered the area of suspected wind gust, it suddenly ascended about 8 feet and the left wing lifted. The pilot applied full left aileron and left rudder and forward pressure on the control stick in order to descend and regain the correct flight path. The left wing continued to lift so the glider pilot released the tow rope as the glider made a 30 degree right turn. The glider exited the area of suspected wind gust and the glider pilot was unable to maintain directional control and the glider impacted the runway. The glider sustained substantial damage to the rear fuselage and empennage. He also reported that there were no mechanical malfunctions or failures with the glider that would have precluded normal operation.
Probable cause
The pilot's failure to maintain direction control of the glider during takeoff in gusty wind conditions. The National Transportation Safety Board determined the probable cause of this accident.
Circumstances
- Event type
- Accident
- Highest injury
- Minor
- Weather conditions
- Visual Meteorological Cond
- Light condition
- Day
- Sky condition
- BKN
- Ceiling (ft)
- 4100
- Visibility (sm)
- 10
- Wind direction
- 170
- Wind speed (kt)
- 11
- Temperature (F)
- 90
- Nearest airport
- GHSA-WALLIS GLIDEPORT
- Distance from field
- 0.0
- Airport elevation
- 127
Aircraft
| Registration | Make | Model | Damage | FAR part |
|---|---|---|---|---|
| N245AB | — | — | SUBS | 091 |
Sequence of events
| # | Occurrence | Phase |
|---|---|---|
| 1 | Takeoff Other weather encounter | Takeoff |
| 2 | Takeoff Collision with terr/obj (non-CFIT) | Takeoff |
| 3 | Takeoff Glider tow event | Takeoff |
| 4 | Takeoff Abrupt maneuver defining | Takeoff |