Probable cause
The student pilot’s failure to maintain an adequate glidepath and the flight instructor’s delayed remedial action, which resulted in the glider landing short of the runway.
NTSB analysis
The flight instructor of the glider reported that, during landing, about 100 above the ground, "a sink rate started to develop." He added that he took over the flight controls and closed the spoilers. The glider impacted the airport perimeter fence, landed short of the runway, and then slid into a culvert.
The glider sustained substantial damage to the empennage.
The flight instructor did not submit the National Transportation Safety Board Form 6120.1 Pilot/Operator Aircraft Accident/Incident Report.
Text from the NTSB. Open the NTSB docket for GAA17CA343 for the full record.
Event
- Date
- Jun 15, 2017
- Type
- Accident
- Place
- Boerne, Texas
- Nearest airport
- Boerne Stage Field (5C1)
- Highest injury
- None
- Weather
- Visual (VMC)
- Light
- Day
Burkhart Grob G103C
- N-number
- N103GH
- Category
- Glider
- Year built
- 1989
- 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.