- Date
- June 15, 2017, 15:40 local (20:40 UTC)
- Place
- Boerne, TX
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N103GHBurkhart Grob G103C
- Defining event
- Landing: Landing area undershoot
- Weather
- Visual (VMC) · Day
- Status
- Completed · report January 23, 2018
- Report
- Approved by Office Director
- NTSB office
- General Aviation Accidents
- Parties
- FAA
- FAA report
- 20170615010869A
- Case key
- 95380
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
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.
Findings · 5
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
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.
Factual narrative
The flight instructor of a glider report that, during landing, about 100 above the ground, a "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 and landed short of the runway, then slid into a culvert. The glider sustained substantial damage to the empennage. The flight instructor failed to submit the NTSB Form 6120.1 Pilot/ Operator Aircraft Accident/ Incident Report.
Aircraft
- Registration
- N103GH
- Reported as
- Burkhart Grob G103C (TWIN II AC)
- Category
- Glider
- Serial number
- 34110
- Built
- 1989
- Damage
- Substantial damage
- Flight
- Instructional · Part 91
- Airworthiness certificate
- Standard, Aerobatic
- Departed
- 5C1 · Boerne, TX
- Destination
- 5C1 · Boerne, TX
- Flight plan
- Unknown
- Airport
- 5C1 · Boerne Stage Field, runway 17, 5,006 × 60 ft, asphalt
- Equipment
- Unknown
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew · 2
As NTSB recorded them. NTSB leaves out names.
- Role
- Flight instructor
- Age
- 67
- Injuries
- None
- Certificates
- Airline transport, Flight instructor
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, With waivers/limitations
- Role
- Student pilot
- Age
- 57
- Injuries
- None
- Certificate
- Private
- Medical
- Unknown, Unknown
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 140° at 14 knots, gusting 18
- Visibility
- 10 statute miles
- Temperature
- 97 °F, dew point 68 °F
- Altimeter
- 29.93 inHg
- Observed at
- KSAT, 15 nm away
Docket · 3
The files NTSB released with the investigation on December 14, 2017, on NTSB’s docket system: statements, records, photos and specialists’ reports. 844 KB in all.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.