NTSB investigations: Let L-23 SUPER BLANIK
10 cases on aircraft the registry lists as Let L-23 SUPER BLANIK, where the sequence of events included Collision with terr/obj (non-CFIT). Aircraft are matched to the registry by N-number and event date, checked against the reported serial number, make and model, so older matches can be wrong.
Cases per year
| 2012 | 1 |
|---|---|
| 2014 | 1 |
| 2015 | 1 |
| 2017 | 3 |
| 2018 | 1 |
| 2020 | 1 |
| 2023 | 1 |
| 2025 | 1 |
Where
Open the mapLatest cases
Query with SQL
duckdb -csv -c "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"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
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" DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB ERA25LA336Accident · Serious injuriesClass 4 · LimitedFinal reportLet L-23 Super Blanik · Ridgeland, SCThe 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 WPR23LA362Accident · No injuriesClass 4 · LimitedFinal reportLet L-23 Super Blanik · Minden, NVThe pilot’s failure to maintain directional control during the landing roll, resulting in an impact with a taxiway sign.NTSB ERA20CA116Accident · Serious injuriesData collectionFinal reportLet L 23 Super Blanik · Huntsville, ALThe 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 CEN18FA217Accident · 2 fatalField investigationFinal reportLet L 23 Super Blanik · Moose, WYThe 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 GAA18CA093Accident · No injuriesData collectionFinal reportLet L 23 Super Blanik · Clermont, FLThe student pilot’s failure to maintain directional control during the landing flare.NTSB GAA17CA566Accident · No injuriesData collectionFinal reportLet L 23 Super Blanik · Hampshire, ILThe pilot’s improper landing flare and subsequent failure to maintain directional control during landing.NTSB GAA17CA427Accident · Minor injuriesData collectionFinal reportLet L23 · Deatsville, ALThe student pilot’s failure to maintain clearance from trees and power lines while landing.NTSB GAA15CA028Accident · Minor injuriesData collectionFinal reportLet L23 - NO Series · Los Alamitos, CAThe 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 ERA14LA391Accident · Serious injuriesLimited investigationFinal reportLet L 23 Super Blanik · Sylacauga, ALThe 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 ERA12CA454Accident · Minor injuriesData collectionFinal reportLet L-23 Super Blanik · Benton, TNThe pilot's inadvertent extension of the wing airbrakes, which resulted in a loss of lift and subsequent landing prior to the runway.