# NTSB investigations: Let L-23 SUPER BLANIK: Collision with terr/obj (non-CFIT)

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 WPR23LA362](https://openairdocs.org/ntsb/WPR23LA362.md): Let L-23 Super Blanik · Minden, NV · Accident · No injuries · Class 4 · Limited · Final report · Jun 3, 2023 · N438BA · Substantial damage
  > The pilot’s failure to maintain directional control during the landing roll, resulting in an impact with a taxiway sign.
- [NTSB ERA20CA116](https://openairdocs.org/ntsb/ERA20CA116.md): Let L 23 Super Blanik · Huntsville, AL · Accident · Serious injuries · Data collection · Final report · Mar 1, 2020 · N296BA · Substantial damage
  > The pilot's failure to maintain glider control and his exceedance of the glider's critical angle of attack while maneuvering in gusting wind conditions, which resulted in an aerodynamic stall.
- [NTSB CEN18FA217](https://openairdocs.org/ntsb/CEN18FA217.md): Let L 23 Super Blanik · Moose, WY · Accident · 2 fatal · Field investigation · Final report · Jun 9, 2018 · N317BA · Destroyed
  > The pilot's encounter with atmospheric conditions that resulted in a loss of lift and a subsequent loss of control near terrain that precluded recovery. Contributing to the accident was the pilot's failure to follow the operator's published tour flight…
- [NTSB GAA18CA093](https://openairdocs.org/ntsb/GAA18CA093.md): Let L 23 Super Blanik · Clermont, FL · Accident · No injuries · Data collection · Final report · Dec 23, 2017 · N389BA · Substantial damage
  > The student pilot’s failure to maintain directional control during the landing flare.
- [NTSB GAA17CA566](https://openairdocs.org/ntsb/GAA17CA566.md): Let L 23 Super Blanik · Hampshire, IL · Accident · No injuries · Data collection · Final report · Sep 30, 2017 · N260BA · Substantial damage
  > The pilot’s improper landing flare and subsequent failure to maintain directional control during landing.
- [NTSB GAA17CA427](https://openairdocs.org/ntsb/GAA17CA427.md): Let L23 · Deatsville, AL · Accident · Minor injuries · Data collection · Final report · Jul 21, 2017 · N342BA · Substantial damage
  > The student pilot’s failure to maintain clearance from trees and power lines while landing.
- [NTSB GAA15CA028](https://openairdocs.org/ntsb/GAA15CA028.md): Let L23 - NO Series · Los Alamitos, CA · Accident · Minor injuries · Data collection · Final report · Mar 29, 2015 · N381BA · Substantial damage
  > The inadvertent deployment of the air brakes during initial climb, resulting in a loss of lift. Contributing to the accident was the pilot's failure to identify and remediate the cause.
- [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.
- [NTSB ERA12CA454](https://openairdocs.org/ntsb/ERA12CA454.md): Let L-23 Super Blanik · Benton, TN · Accident · Minor injuries · Data collection · Final report · Jun 28, 2012 · N273BA · Substantial damage
  > The pilot's inadvertent extension of the wing airbrakes, which resulted in a loss of lift and subsequent landing prior to the runway.

## 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" = '470' 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/470/sequence?model=1360308

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