NTSB investigations: Let L-23 SUPER BLANIK
35 cases on aircraft the registry lists as Let L-23 SUPER BLANIK. 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
| 1994 | 1 |
|---|---|
| 1995 | 2 |
| 1996 | 2 |
| 1998 | 2 |
| 1999 | 1 |
| 2000 | 1 |
| 2001 | 1 |
| 2002 | 2 |
| 2006 | 2 |
| 2007 | 1 |
| 2009 | 1 |
| 2010 | 1 |
| 2012 | 1 |
| 2013 | 1 |
| 2014 | 2 |
| 2015 | 1 |
| 2017 | 4 |
| 2018 | 1 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 2 |
| 2025 | 1 |
| 2026 | 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'))
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'))
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 WPR26LA271Accident · No injuriesClass 4 · LimitedInvestigation openLet L-23 Super Blanik · North Plains, ORNTSB 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 CEN23LA254Accident · Serious injuriesClass 3 · LimitedFinal reportLet L-23 Super Blanik · Gregory, MIThe 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 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 CEN22LA279Accident · Serious injuriesClass 4 · LimitedFinal reportLet L-23 Super Blanik · Yoder, KSThe pilot's encounter with sinking air conditions that resulted in a loss of lift and a subsequent loss of control.NTSB ERA21LA327Accident · Serious injuriesClass 4 · LimitedFinal reportLet L-23 Super Blanik · Sterling, MAThe flight instructor’s lack of remedial action, which resulted in an aerodynamic stall in the landing flare and a hard landing.NTSB ERA21LA242Accident · No injuriesClass 4 · LimitedFinal reportLet L-23 Super Blanik · Pittsfield, PAThe student pilot’s improper landing flare, which resulted in a hard landing and loss of directional control.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 GAA17CA477Accident · No injuriesData collectionFinal reportLet L 23 Super Blanik · Homestead, FLThe glider’s encounter with atmospheric conditions where the lift was not sufficient to maintain flight, which resulted in the pilot landing short of the intended runway.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 ERA14LA341Accident · No injuriesLimited investigationFinal reportLet L 23 Super Blanik · Warm Springs, GAThe failure of the flight instructor to move his glider from an active runway in accordance with procedures due to his distraction by having a conversation with the air boss, which resulted in the landing glider colliding with the glider on the runway.NTSB ERA14CA088Accident · No injuriesData collectionFinal reportLet L 23 Super Blanik · Clermont, FLThe student pilot's failure to maintain directional control during the landing roll.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.NTSB CEN10CA507Accident · No injuriesData collectionFinal reportLet L-23 Super Blanik · Socorro, NMA loss of lift that resulted in an off-airport landing.NTSB CEN09CA269Accident · No injuriesData collectionFinal reportLet L-23 Super Blanik · Adrian, MIThe flight instructor's inadequate compensation for the strong, gusting crosswind during landing. Contributing to the accident was the flight instructor's decision to attempt flight with known adverse weather approaching the airport.NTSB NYC07CA151Accident · No injuriesData collectionFinal reportLet Super Blanik L-23 · Warren, VTThe glider's inadvertent encounter with windshear. A factor was the outflow from a nearby thunderstorm.NTSB ANC07CA005Accident · No injuriesData collectionFinal reportLetecky Zavody L-23 Super Blanik · Chugiak, AKThe pilot's failure to maintain control of the glider while landing in gusty crosswind conditions, which resulted in a hard landing and structural damage to the fuselage. Factors associated with the accident were turbulence, a crosswind and wind gusts, and…NTSB LAX06TA234Accident · No injuriesFinal reportLet Super Blanik L-23 · Los Alamitos, CAfailure of the winch operator to maintain an adequate winch tow speed, resulting in a stall and hard landing.NTSB MIA03LA022Accident · No injuriesLimited investigationFinal reportLet L-23 · Groveland, FLthe pilot's failure to extend the dive brakes during approach and his excessive airspeed and improper landing flare which resulted in the airplane nosing down and impacting with the runway.NTSB NYC02LA046Accident · No injuriesLimited investigationFinal reportLet L-23 · Sterling, MAThe student pilots inadequate compensation for wind conditions which resulted in an off-field landing, and the CFI's improper decision to allow the student to fly solo. Factors related to the accident were the gusting wind conditions, and the students lack of…NTSB SEA01LA091Accident · No injuriesLimited investigationFinal reportLet L-23 · Arlington, WAthe flight instructor's improper decision to partially retract the spoilers while the student was attempting to land. Factors include a tailwind, wet grass, and a taxiway sign off the end of the landing area.NTSB FTW00LA219Accident · 1 fatalLimited investigationFinal reportLet L-23 Super Blankit · Waller, TXthe pilot's failure to maintain control of the glider while maneuvering. Contributory factors were the in-flight separation of the tow rope and the pilot's physical impairment from his use of diphenhyrdramine.NTSB MIA99LA197Accident · No injuriesLimited investigationFinal reportLet L-23 · Jacksonville, FLthe pilot's improper in-flight decisions allowing the glider to descend to a low altitude, resulting in a forced landing off the airport and subsequent impact with a tree.NTSB NYC98LA097Accident · Serious injuriesLimited investigationFinal reportLet L-23 Super Blanik · Pipersville, PAthe pilot's misjudgment of distance and altitude, while on an approach to an off-airport landing area, which resulted in a lack of airspeed and/or altitude to reach the intended landing area (undershoot), a stall or mush into tree(s), and collision with a…NTSB IAD98LA046Accident · No injuriesLimited investigationFinal reportLet L-23 · New Castle, VAThe pilot's failure to maintain adequate airspeed during the turn to reverse direction. A factor was his improper use of the speed brake.NTSB FTW97LA054Accident · No injuriesLimited investigationFinal reportLet L23 · Bryan, TXthe pilot misjudged his distance and altitude during the landing approach. Factors relating to the accident were: the high obstructions (power lines), and subsequent tailwind during the forced landing.NTSB CHI96LA339Accident · No injuriesLimited investigationFinal reportPiper PA-25 · Highland, ILfailure of the Piper PA-25 tow pilot to see-and-avoid the Blanik L-23 glider. A factor relating to the accident was: neither aircraft was equipped with a communication radio.NTSB MIA96LA045Accident · No injuriesLimited investigationFinal reportLet L-23 · Jacksonville, FLThe pilot's failure to properly plan the flight.NTSB ATL95LA093Accident · Minor injuriesLimited investigationFinal reportLet L-23 Super Blanik · Spartanburg, SCThe pilot's inadvertent use speed brakes during takeoff.NTSB FTW94LA250Accident · No injuriesLimited investigationFinal reportLet L-23 · Stillwater, OKThe certified flight instructor's failure to maintain flying speed.