# NTSB investigations: Lycoming GO-435C&D series, 1989

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 BFO89FA069](https://openairdocs.org/ntsb/BFO89FA069.md): Beech B50 · Church Creek, MD · Accident · 3 fatal · Field investigation · Final report · Aug 23, 1989 · N3688B · Destroyed
  > VFR flight into IMC and pilot disorientation, which resulted in the loss of aircraft control. Contributing to the accident was the pilot's lack of instrument experience, darkness, and the adverse weather condition.

## 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 year(c."eventDate") = 1989
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41521'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41521&year=1989

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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.