NTSB investigations: Schweizer SGS 2-33A

8 cases on aircraft the registry lists as Schweizer SGS 2-33A, where the sequence of events included Off-field or emergency landing. 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

20122026

NTSB investigations: Schweizer SGS 2-33A per year, 2012–2026: 8 cases
2012	1
2013	3
2018	1
2020	1
2022	1
2025	1

Where

Open the map

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 ('8051606') 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" = '440' 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

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 ('8051606')
      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\" = '440' 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 ('8051606')
    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" = '440' 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

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 WPR25LA138Accident · No injuriesClass 4 · LimitedFinal reportSchweizer SGS 2-33A · Hood River, ORThe glider’s encounter with atmospheric conditions where the lift was not sufficient to maintain flight.Apr 19, 2025 · N5786S · Substantial damage NTSB ERA22LA326Accident · No injuriesClass 4 · LimitedFinal reportSchweizer SGS 2-33A · Waynesville, OHThe pilot’s loss of situational awareness (geographic position), which resulted in his inability to locate the intended landing runway and his decision to perform an off-airport landing.Jul 10, 2022 · N3616Q · Substantial damage NTSB WPR20CA273Accident · No injuriesClass 4 · Data collectionFinal reportSchweizer SGS233 · Warner Springs, CAThe pilot's inability to maintain altitude due to a loss of thermal lift, which resulted in an off-airport landing.Aug 14, 2020 · N7547 · Substantial damage NTSB ERA18LA211Accident · No injuriesLimited investigationFinal reportSchweizer SGS233 · Churchville, MDThe pilots' decision to take off from a wet, upsloping turf runway with a quartering tailwind and elevated density altitude conditions, which degraded takeoff and climb performance and resulted in the glider flight instructor's decision to discontinue the…Aug 5, 2018 · N2832H · Substantial damage NTSB CEN13CA573Accident · No injuriesData collectionFinal reportSchweizer SGS 2 33A · Hampshire, ILThe student pilot's inadequate compensation for landing area conditions during an off-airport landing which resulted in a collision with an obstruction.Sep 2, 2013 · N2668H · Substantial damage NTSB ERA13CA352Accident · No injuriesData collectionFinal reportSchweizer SGS 2-33A · Erwinna, PAThe student pilot's improper altitude and energy management in the landing pattern which resulted in the glider impacting a tree and landing short of the runway.Aug 4, 2013 · N1211S · Substantial damage NTSB WPR13CA333Accident · Serious injuriesData collectionFinal reportSchweizer SGS 2-33A · Hood River, ORThe glider encountered atmospheric conditions where the lift was not sufficient to maintain flight, which resulted in an off airport landing on rough terrain.Jul 20, 2013 · N2052T · Substantial damage NTSB WPR12CA084Accident · Minor injuriesData collectionFinal reportSchweizer SGS 2-33A · Peoria, AZThe glider pilot released from the tow airplane at a lower altitude than the planned altitude, which resulted in an off-airport landing.Jan 28, 2012 · N17873 · Substantial damage