# NTSB investigations: Let L-23 SUPER BLANIK: Aerodynamic stall/spin

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

## Latest cases

- [NTSB ERA25LA336](https://openairdocs.org/ntsb/ERA25LA336.md): Let L-23 Super Blanik · Ridgeland, SC · Accident · Serious injuries · Class 4 · Limited · Final report · Sep 6, 2025 · N231LS · Substantial damage
  > The pilot’s exceedance of the glider’s critical angle of attack which resulted in a loss of control while maneuvering to return for landing after a runway overshoot.
- [NTSB CEN23LA254](https://openairdocs.org/ntsb/CEN23LA254.md): Let L-23 Super Blanik · Gregory, MI · Accident · Serious injuries · Class 3 · Limited · Final report · Jun 21, 2023 · N10BR · Substantial damage
  > The flight instructor’s failure to maintain adequate airspeed and his exceedance of the glider’s critical angle of attack, leading to an aerodynamic stall during the off-field landing.
- [NTSB CEN22LA279](https://openairdocs.org/ntsb/CEN22LA279.md): Let L-23 Super Blanik · Yoder, KS · Accident · Serious injuries · Class 4 · Limited · Final report · Jun 22, 2022 · N364BA · Substantial damage
  > The pilot's encounter with sinking air conditions that resulted in a loss of lift and a subsequent loss of control.
- [NTSB ERA21LA327](https://openairdocs.org/ntsb/ERA21LA327.md): Let L-23 Super Blanik · Sterling, MA · Accident · Serious injuries · Class 4 · Limited · Final report · Jul 31, 2021 · N373BA · Minor damage
  > The flight instructor’s lack of remedial action, which resulted in an aerodynamic stall in the landing flare and a hard landing.
- [NTSB ERA14LA391](https://openairdocs.org/ntsb/ERA14LA391.md): Let L 23 Super Blanik · Sylacauga, AL · Accident · Serious injuries · Limited investigation · Final report · Aug 17, 2014 · N266SE · Substantial damage
  > The student pilot's failure to maintain adequate airspeed while maneuvering, which resulted in an aerodynamic stall and spin. Contributing to the accident was the student pilot's failure to properly assess her physical condition prior to conducting the flight.

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('1360308')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.case_mkey = x.case_mkey AND s.aircrafts_position = x.position AND s."tier2Number" = '241' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent")))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/241/sequence?model=1360308

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