# NTSB investigations: Ayres S2R-T34: Airframe/component/system failure/malfunction

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

## Latest cases

- [NTSB LAX02LA226](https://openairdocs.org/ntsb/LAX02LA226.md): Ayres S2R-T34 · Firebaugh, CA · Accident · No injuries · Limited investigation · Final report · Jul 13, 2002 · N4020Y · Substantial damage
  > The overload fracture and separation of the left main gear strut assembly due the left landing gear's encounter with a chuck hole in the private airstrip's asphalt pavement. A factor in the accident was the inadequate maintenance of the airstrip's surface.
- [NTSB FTW97FA220](https://openairdocs.org/ntsb/FTW97FA220.md): Ayres S2R-T34 · Corning, AR · Accident · 1 fatal · Field investigation · Final report · Jun 14, 1997 · N3103D · Destroyed
  > The in-flight separation of the left wing as result of fatigue crack of the lower spar cap due to inadequate materials by the manufacturer. A factor was the operator's failure to comply with a published service bulletin on the airframe.
- [NTSB FTW96LA069](https://openairdocs.org/ntsb/FTW96LA069.md): Ayres S2R-T34 · West Helena, AR · Accident · No injuries · Limited investigation · Final report · Dec 13, 1995 · N3090C · Substantial damage
  > Binding of the power lever linkage, due to corrosion, which resulted in a situation that led to an inadvertent shut-down of the engine at a critical point on the approach to land. A factor relating to the accident was: inadequate maintenance.
- [NTSB LAX92FA149](https://openairdocs.org/ntsb/LAX92FA149.md): Ayres S2R-T34 · Bakersfield, CA · Accident · Serious injuries · Field investigation · Final report · Mar 23, 1992 · N59SK · Destroyed
  > A catastrophic wing spar failure precipitated by hidden corrosion and the restricted view of the area of corrosion by the airplane's wing structure.
- [NTSB MIA90FA190](https://openairdocs.org/ntsb/MIA90FA190.md): Ayres S2R-T34 · Thornton, MS · Accident · 1 fatal · Field investigation · Final report · Sep 26, 1990 · N4017B · Destroyed
  > The improper drilling of a hole in the spar cap by a mechanic resulting in the initiation of fatigue cracking in the spar cap and subsequent failure of the spar cap and inflight separation of the wing.

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```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 ('0970106')
    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" = 130))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=0970106&occurrence=130

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