# NTSB FTW92LA079: Burkhart Grob G103, N94BG, Boerne, TX, March 1, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 1, 1992, 16:00 local (22:00 UTC)
- Place: Boerne, TX
- Coordinates: 29.899566, -98.55944 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=29.8996&lon=-98.5594&mi=10
- Phase of flight: [Uncontrolled descent](https://openairdocs.org/ntsb-phases/650) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report July 23, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 18450
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW92LA079
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/18450/pdf
- Page: https://openairdocs.org/ntsb/FTW92LA079

## Probable cause

THE PILOT IN COMMAND INADVERTENTLY STALLING THE AIRCRAFT. FACTORS WERE THE PILOT NOT MAINTAINING PROPER ALTITUDE DURING THE APPROACH AND HIS ABRUPT AIRCRAFT HANDLING.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Hard landing, descent - uncontrolled
  - proper altitude - not maintained, pilot in command (contributing factor)
  - aircraft handling - abrupt, pilot in command (contributing factor)
  - stall - inadvertent, pilot in command (cause)

## Analysis

THE GLIDER PILOT REPORTED NOT FINDING LIFT SEVERAL MILES TO THE WEST OF THE AIRSTRIP. UPON REACHING 1,500 FEET AGL AND DESCENDING, HE ELECTED TO PROCEED TOWARD THE AIRFIELD LOCATED TO THE EAST OF HIS POSITION. HE ESTABLISHED 55 KNOTS OF AIRSPEED AND DESCENDED TO APPROXIMATELY THIRTY FEET ABOVE THE TREES. AFTER CLEARING THE TREES HE MADE AN AGGRESSIVE RIGHT BANKING TURN TO ALIGN WITH RUNWAY 17. DURING THE ROLL OUT THE GLIDER STALLED. THE RIGHT WING STRUCK THE GRASS TERRAIN FOLLOWED BY THE FUSELAGE. THE PILOT STATED THAT HE MADE A MISTAKE BY GETTING TOO LOW AND SLOW AND BANKING TOO STEEPLY DURING THE TURN WHILE LANDING.

## Aircraft

- Registration: [N94BG](https://openairdocs.org/deregistered/N94BG-2022-11-30), registration cancelled 2022-11-30, S/N 3652, built 1981 (OpenAirDocs)
- Reported make and model: BURKHART GROB G103
- Registry model: [Burkhart Grob Flugzeugbau G103 TWIN ASTIR](https://openairdocs.org/model/burkhart-grob-flugzeugbau-g103-twin-astir) (registry code 1660202) (OpenAirDocs)
- Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs)
- Category: Glider
- Serial number: 3652
- Airframe hours: 560
- Engines: unknown
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Osprey Soaring School, Inc.
- Registered owner: Osprey Soaring School, Inc.
- Airworthiness certificate: Standard, Utility
- Last inspection: Annual, July 31, 1991, 70 hours before
- Airport: 5C1, Boerne Stage Field, runway 17, 3,400 × 40 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 33; private; medical: unknown; seat: front; flight hours: 37 total, 14 in this make and model, 20 as pilot in command, 2 in the last 90 days, 1 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 180° at 10 knots, gusting 15
- Visibility: 20 statute miles
- Lowest ceiling: 10,000 ft broken
- Temperature: 75 °F
- Altimeter: 30.00 inHg

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19920301004809A](https://openairdocs.org/incident/19920301004809A), Mar 1, 1992: Grob G103ATWINII, San Antonio, TX, Substantial damage. Out of lift stretched glide to airport and stalled in steep turn to align with runway.

## Other investigations on N94BG (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB FTW94LA020](https://openairdocs.org/ntsb/FTW94LA020), Oct 25, 1993: Burkhart Grob G103 (N94BG), San Antonio, TX, substantial damage. Probable cause: THE PILOT'S FAILURE TO MAINTAIN A VISUAL LOOKOUT. FACTORS WERE: INADEQUATE ALTITUDE AND DISTRACTED ATTENTION.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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