Skip to content

Final NTSB investigations: Schweizer SGS 1-35C

14 cases on aircraft the registry lists as Schweizer SGS 1-35C. 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

19782026

Where

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."completionStatus" = 'Completed' AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('8050151')) 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.\"completionStatus\" = 'Completed'
    AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('8050151'))
  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."completionStatus" = 'Completed'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('8050151'))
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 CEN22FA224Accident · 1 fatalClass 3 · FieldFinal reportSchweizer SGS135 · Midlothian, TXThe pilot’s incapacitation by an aortic dissection (natural disease).Jun 5, 2022 · N2817H · No damage NTSB CHI07CA233Accident · No injuriesData collectionFinal reportSchweizer SGS 1-35C · Northfield, MNThe pilot's failure to maintain adequate airspeed, which resulted in a stall during the off-airport landing. A factor contributing to the accident was the dirt/rock pile.Jul 20, 2007 · N135EX · Substantial damage NTSB LAX93LA324Accident · Serious injuriesLimited investigationFinal reportSchweizer 1-35C · Wickenburg, AZthe pilot's failure to maintain an adequate airspeed margin while maneuvering to land, resulting in an inadvertent stall/spin.Aug 15, 1993 · N2562H · Destroyed NTSB SEA92LA098Accident · No injuriesLimited investigationFinal reportSchweizer SGS-1-35C · Big Timber, MTAirspeed was not maintained. Factors to the accident were: no thermal lift and inadequate remedial action.May 20, 1992 · N2739H · Substantial damage NTSB SEA92LA036Accident · No injuriesLimited investigationFinal reportSchweizer SGS-1-35C · Hood River, ORPoor preflight planning and preparation along with the pilot's restricted visibility. Factors to the accident were: clouds and VFR flight into IMC.Jan 5, 1992 · N2818H · Destroyed NTSB BFO90LA021Accident · No injuriesLimited investigationFinal reportSchweizer SGS-1-35C · Paint Bank, VAThe pilot's improper inflight planning which led to an off-airport landing after encountering deteriorating lift conditions. Contributing factors were the mountainous terrain and lack of a suitable landing area.Nov 12, 1989 · N2880H · Substantial damage NTSB LAX86FUG05Accident · Serious injuriesFinal reportSchweizer SGS-1-35C · Palm Springs, CADuring a pleasure flight, the acft was not getting the lift required to maintain alt. The plt decided to return to the arpt, however, enroute the plt realized that he would not make it back to the rwy. The plt decided to land in an east west direction on a…Sep 27, 1986 · N2673H · Substantial damage NTSB NYC86FA017Accident · 1 fatalField investigationFinal reportSchweizer SGS-1-35C · North Conway, NHDuring an off airport landing attempt in a cleared corn field, the glider was approaching a treeline at an altitude of 10 to 20 ft AGL. Witnesses observed the glider pull up and bank to the left before falling nose first into the ground. The pilot's log book…Oct 25, 1985 · N2565H · Destroyed NTSB LAX83FA386Accident · 1 fatalField investigationFinal reportSchweizer SGS 1-35C · Jamul, CAReportedly, after waiting almost 2 hrs, the plt decided he would fly the sailplane, either for 1 hr or until the owner arrived, when the owner arrived, he observed the sailplane flying back & forth along the north side of ridge area. Subsequently, the acft…Aug 14, 1983 · N2941H · Destroyed NTSB NYC81FFJ11Accident · Minor injuriesClosedSchweizer 1-35C · Java, NYMay 9, 1981 · N135RS · Substantial damage NTSB NYC81DHA12Accident · Minor injuriesClosedSchweizer 1-35C · Blairstown, NJMay 3, 1981 · N2705H · Destroyed NTSB LAX80DUG40Accident · No injuriesClosedSchweizer 1-35C · Perris, CAMay 26, 1980 · N2675H · Substantial damage NTSB DEN79DTE38Accident · No injuriesClosedSchweizer SGS135 · Colorado Spr, COMay 13, 1979 · N2739H · Substantial damage NTSB NYC78DHA40Accident · No injuriesClosedSchweitzer 1-35C · Kutztown, PASep 30, 1978 · N2776H · Substantial damage