# NTSB investigations: Lycoming TIO-540 series: Landing gear collapse

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 ERA25LA268](https://openairdocs.org/ntsb/ERA25LA268.md): Piper PA46 · Elysburg, PA · Accident · No injuries · Class 4 · Limited · Final report · Jul 11, 2025 · N962WF · Substantial damage
  > Failure of the engine mount which resulted in a collapse of the nose landing gear.
- [NTSB WPR14LA307](https://openairdocs.org/ntsb/WPR14LA307.md): Piper PA 46 350P · Auburn, WA · Accident · No injuries · Limited investigation · Final report · Jul 22, 2014 · N60PB · Substantial damage
  > A collapse of the nose landing gear for reasons that could not be determined based on the available information.
- [NTSB ERA12LA441](https://openairdocs.org/ntsb/ERA12LA441.md): Piper PA-46-350P · Auburn, AL · Accident · No injuries · Limited investigation · Final report · Jul 6, 2012 · N4133G · Substantial damage
  > The airplane owner’s failure to have maintenance personnel comply with an aircraft manufacturer's service bulletin to require engine mount inspections for fatigue cracks, which resulted in an undetected fatigue crack, the engine mount failing, and the nose…

## 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 ('41569', '42500')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '094'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/094/cases?engine=41569

---
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.