# NTSB investigations: Lycoming GO-435C&D series: 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 CHI90LA031](https://openairdocs.org/ntsb/CHI90LA031.md): Helio H-391B · Plainwell, MI · Accident · No injuries · Limited investigation · Final report · Nov 20, 1989 · N8750R · Substantial damage
  > Failure of the crosswind landing gear system to engage on the left main gear due to improper rigging adjustment by maintenance personnel. Factors related to the accident were: unfavorable wind conditions (gusts and quartering crosswind) and soft terrain in…
- [NTSB FTW87FA177](https://openairdocs.org/ntsb/FTW87FA177.md): Aero Commander 520 · Carrollton, TX · Accident · Minor injuries · Field investigation · Final report · Jul 27, 1987 · N4164B · Destroyed
  > Acft was destroyed when it struck pwr lines and the grnd during a single eng go-around. Following a left eng shut down due to severe vibrations, the plt overflew one arpt to return to his home base. En route, he elected not to go to full pwr due to a 3 min…

## 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.engine_model_code IN ('41521')
    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?engine=41521&occurrence=130

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OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.