NTSB investigations: Schleicher Alexander K 7

8 cases on aircraft the registry lists as Schleicher Alexander K 7. 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.

Defining event

Finding

Phase of flight

Aircraft model

Cases per year

19652026

NTSB investigations: Schleicher Alexander K 7 per year, 1965–2026: 8 cases
1965	1
1967	1
1976	1
1977	1
1979	1
1980	1
2013	1
2014	1

Where

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Latest cases

Query with 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 ('3801551')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

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 ('3801551'))
  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 ('3801551'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

Run 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 ERA14CA215Accident · Serious injuriesData collectionFinal reportSchleicher Alexander K 7 · Benton, TNThe pilot's distraction with traffic on the runway, and his subsequent failure to retract the air brakes prior to touchdown, which resulted in a hard landing.Apr 27, 2014 · N1002Z · Minor damage NTSB CEN13FA213Accident · 2 fatalField investigationFinal reportSchleicher Alexander · Littlefield, TXThe pilot’s improper decision to conduct aerobatic maneuvers in a glider not approved for such maneuvers. Contributing to the accident was the degradation of the adhesive holding the wing together, which should have been detected either during the last annual…Mar 30, 2013 · N12053 · Substantial damage NTSB CHI81FEK27Accident · No injuriesClosedSchleicher K7 · Montpelier, OHSep 24, 1980 · N1002Z · Substantial damage NTSB IAD80DIG04Accident · No injuriesClosedSchleicher KA-7 · Lavale, MDDec 28, 1979 · N1047Z · Substantial damage NTSB CHI77FEK26Accident · No injuriesClosedSchleicher K-7 · Montpelier, OHAug 14, 1977 · N6380T · Substantial damage NTSB MKC76FCJ55Accident · No injuriesClosedSchleicher K-7 · Lincoln, NEJul 28, 1976 · N8241E · Substantial damage NTSB NYC68D0065Accident · No injuriesClosedSchleicher K7 · Middlesex, NYJul 9, 1967 · N4771G · Substantial damage NTSB CHI66D0134Accident · Minor injuriesClosedSchleicher K7 · Jefferson, OHJun 24, 1965 · N4700G · Substantial damage