NTSB investigations: Schweizer SGS 2-33A

8 cases on aircraft the registry lists as Schweizer SGS 2-33A, where the first occurrence was “Miscellaneous/other”. 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
NTSB investigations: Schweizer SGS 2-33A per year, 1984–2026: 8 cases
19841
19861
19891
19901
19911
19921
19951
20071

Latest 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 ('8051606')
      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\" = 430))
  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 LAX07CA172Accident · No injuriesData collectionFinal reportSchweizer SGS2-33A · Los Alamitos, CAfailure of the towrope during the initial climb out.May 22, 2007 · N65844 · Substantial damageNTSB NYC96LA016Accident · Minor injuriesLimited investigationFinal reportSchweizer SGS 2-33 · Barre, MAThe pilot's improper inflight planning/decision, which resulted in his failure to return to the airport after encountering an area of no thermal lift, and his failure to maintain adequate airspeed, while maneuvering to avoid an obstruction during an off…Oct 22, 1995 · N65852 · Substantial damageNTSB CHI92LA208Accident · No injuriesLimited investigationFinal reportSchweizer SGS2-33A · Kendallville, INImproper remedial action, the pilot's failure to maintain airspeed, and the failed tow rope.Jul 5, 1992 · N36133 · Substantial damageNTSB NYC91LA066Accident · No injuriesLimited investigationFinal reportSchweizer SGS 2-33A · Williamstown, MAThe failure of the pilot to retract the speed brakes during the preflight, which resulted in the tow airplane being unable to attain sufficient altitude prior to releasing the glider, and the subsequent landing of the glider on unsuitable terrain.Jan 26, 1991 · N5763S · Substantial damageNTSB NYC90LA046Accident · Minor injuriesLimited investigationFinal reportSchweizer SGS 2-33A · Kutztown, PAImproper decision of the glider pilot to exit the glider without positive assurance that the tow pilot had received his signal or that the glider was released from the tow plane. A related factor to the accident was: the lack of crew coordination between the…Jan 8, 1990 · N2637H · Substantial damageNTSB LAX89LA291Accident · Minor injuriesLimited investigationFinal reportSchweizer SGS 2-33A · Hemet, CAInadequate crew coordination between the tow pilot and glider pilot, failure of the glider pilot to obtain proper assistance, and the tow pilot's misunderstanding of the glider pilot's intentions.Aug 30, 1989 · N65843 · 2 aircraft · DestroyedNTSB CHI86LA186Accident · Minor injuriesLimited investigationFinal reportSchweizer SGS 2-33A · Mattoon, ILThe glider was being towed for takeoff behind a tow plane. According to the glider instructor, the initial acceleration appeared normal. As the tow plane and the glider neared the end of the runway, the glider instructor believed the tow plane was…Jul 28, 1986 · N65901 · Substantial damageNTSB SEA85LA002Accident · Minor injuriesLimited investigationFinal reportSchweizer SGS 2-33A · Hood River, ORAt about 150 ft AGL on climb out, the tow plane lost power for an unspecified reason. The glider pilot released the tow and executed a 180 degree course reversal to a downwind (15 KTS) landing. During roll out, the left wing contacted the ground, causing an…Oct 4, 1984 · N5786S · Substantial damage