# NTSB FTW92LA167: Glasflugel 201B, N6152, Briggs, TX, June 20, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 20, 1992, 16:15 local (21:15 UTC)
- Place: Briggs, TX
- Coordinates: 30.939947, -97.930099 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=30.9399&lon=-97.9301&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report June 11, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 18521
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW92LA167
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/18521/pdf
- Page: https://openairdocs.org/ntsb/FTW92LA167

## Probable cause

THE INADVERTENT GROUND LOOP BY THE PILOT. FACTORS WERE THE DOWNDRAFT AND THE ROUGH/UNEVEN TERRAIN.

## Sequence of events

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

- In flight encounter with weather, maneuvering
  - weather condition - downdraft (contributing factor)
- Forced landing, descent - emergency
- Loss of control - on ground/water, landing - roll
  - terrain condition - rough/uneven (contributing factor)
  - ground loop/swerve - inadvertent, pilot in command (cause)

## Analysis

THE GLIDER ENCOUNTERED A DOWNDRAFT AND COULD NOT MAKE IT BACK TO THE GLIDER STRIP. A FORCED LANDING WAS ACCOMPLISHED ONTO ROUGH/UNEVEN TERRAIN. DURING THE LANDING ROLL, THE PILOT INADVERTENTLY GROUND LOOPED THE GLIDER.

## Aircraft

- Registration: [N6152](https://openairdocs.org/aircraft/N6152), registered now, S/N 121, built 1970 (OpenAirDocs)
- Reported make and model: GLASFLUGEL 201B
- Registry model: [Glasflugel STANDARD LIBELLE](https://openairdocs.org/model/glasflugel-standard-libelle) (registry code 3800341) (OpenAirDocs)
- Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs)
- Category: Glider
- Serial number: 121
- Airframe hours: 1209
- Engines: unknown
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Leiserowitz, William R.
- Registered owner: Leiserowitz, William R.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, February 8, 1992, 6 hours before
- Departed: NONE

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 26; private; medical: unknown; seat: center; flight hours: 31 total, 13 in this make and model, 13 as pilot in command, 5 in the last 90 days, 1 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 90 °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 19920620047039A](https://openairdocs.org/incident/19920620047039A), Jun 20, 1992: Glasfl LIBELLE, Briggs, TX, Substantial damage. Lost lift and encountered downdraft. Unable airport. Ground looped landing in rough field.

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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