# NTSB investigations: Lycoming TI0-541 series, IA

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 MKC84LA031](https://openairdocs.org/ntsb/MKC84LA031.md): Piper PA-31-350 · Waterloo, IA · Accident · No injuries · Limited investigation · Final report · Nov 28, 1983 · N600TS · Substantial damage
  > After takeoff for an FAA part 135 check ride, the aircrew were unable to get a positive up indication for the landing gear. The gear was recycled & then the left main gear would not get a down & locked indication. Repeated attempts to extend the left main…
- [NTSB MKC83IA042](https://openairdocs.org/ntsb/MKC83IA042.md): Piper PA31-350 · Waterloo, IA · Incident · No injuries · Incident investigation · Final report · Dec 21, 1982 · N600TS · Minor damage
  > Prior to landing N600TS reportedly had an unsafe nose gear down indication. At landing touchdown, the nose gear collapsed. Examination revealed no evidence of mechanical malfunction however the bearing ends, p/n 452-412, showed evidence of overload failure.…

## 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."eventStateOrRegion" = 'IA' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41536'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41536&state=IA

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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.