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NTSB investigations: Let BLANIK L-13

7 cases on aircraft the registry lists as Let BLANIK L-13, where the first occurrence was “On ground/water encounter with terrain/water”. 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

19842026

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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 ('1360306')
      AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o.\"occurrenceNumber\" = 1 AND o.\"occurrenceCode\" = 320))
  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.

NTSB SEA02LA140Accident · Minor injuriesLimited investigationFinal reportBlanik L-13 · Belgrade, MTThe glider pilot's improper in-flight planning decision and his failure to attain the proper touchdown point. Contributing to the accident were the inadvertent activation of the speed brakes, the pilot's failure to maintain altitude, the high vegetation and…Jul 31, 2002 · N70741 · Substantial damageNTSB DEN02LA095Accident · No injuriesLimited investigationFinal reportLet Blanik L-13 · Lehi, UTthe pilot's inadequate in-flight planning resulting in the glider impacting terrain short of the runway, and the pilot's subsequent abrupt handling of the glider when it became airborne again, which resulted in a hard second landing. A contributing factor was…Jul 23, 2002 · N48038 · DestroyedNTSB NYC95LA199Accident · No injuriesLimited investigationFinal reportLet Blanik L-13 · Mayville, NYthe pilot's improper flight control input during the landing roll in high grass, which resulted in a ground loop and subsequent wingtip damage.Aug 19, 1995 · N69AS · Substantial damageNTSB SEA93LA141Accident · No injuriesLimited investigationFinal reportLet Blanik L-13 · Enumclaw, WAThe pilot's failure to attain the proper touchdown point. Factors to the accident were: lack of familiarity with geographic area and the grass.Jun 27, 1993 · N82AS · Substantial damageNTSB NYC93LA032Accident · Minor injuriesLimited investigationFinal reportLet LF-13 · Readington, NJThe pilot's poorly planned approach for landing which resulted in an off airport landing in unsuitable terrain.Nov 1, 1992 · N13WG · Substantial damageNTSB BFO92LA039Accident · No injuriesLimited investigationFinal reportLet L-13 · Lock Haven, PAA tow rope that broke at low altitude.Mar 14, 1992 · N12CG · DestroyedNTSB LAX84LA297Accident · No injuriesLimited investigationFinal reportLet L-13 · El Mirage, AZThe glider plt reported that after a release from the tow line, he had difficulty finding lift. He concentrated on finding lift so much that he became disoriented with respect to the rwy. When he elected to return to the arpt, he inadvertently selected a…May 18, 1984 · N3204F · Substantial damage