# Fatal NTSB investigations: Lycoming TI0-540 series, IL

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 CEN15FA048](https://openairdocs.org/ntsb/CEN15FA048.md): Aero Commander 500 B · Chicago, IL · Accident · 1 fatal · Field investigation · Final report · Nov 18, 2014 · N30MB · Substantial damage
  > The pilot's failure to maintain airspeed while attempting to return to the airport after a reported engine problem, which resulted in an aerodynamic stall/spin.
- [NTSB CEN12FA086](https://openairdocs.org/ntsb/CEN12FA086.md): Piper PA-31-350 · Riverwoods, IL · Accident · 3 fatal · Field investigation · Final report · Nov 29, 2011 · N59773 · Substantial damage
  > The pilot's inadequate preflight planning and in-flight decision-making, which resulted in a loss of engine power due to fuel exhaustion during approach. Contributing to the accident was the pilot's decision to operate an airplane after using illicit drugs.
- [NTSB CEN10FA125](https://openairdocs.org/ntsb/CEN10FA125.md): Piper PA 46-350P · Belleville, IL · Accident · 2 fatal · Field investigation · Final report · Feb 22, 2010 · N350WF · Destroyed
  > The pilot’s spatial disorientation and subsequent failure to maintain airplane control during the instrument approach.
- [NTSB CHI04GA130](https://openairdocs.org/ntsb/CHI04GA130.md): Cessna T206H · Homer Glen, IL · Accident · 1 fatal · Final report · May 28, 2004 · N9548D · Destroyed
  > The seized turbocharger, the altitude/clearance not maintained/obtained during approach to a forced landing on an agricultural field, and the unsuitable landing area encountered by the pilot. Contributing factors were the inadequate emergency procedures by…
- [NTSB CHI90FA174](https://openairdocs.org/ntsb/CHI90FA174.md): Piper PA-32R-301T · Ashton, IL · Accident · 2 fatal · Field investigation · Final report · Jul 11, 1990 · N43515 · Destroyed
  > A loss of aircraft control for an unknown reason, while en route in instrument meteorological conditions (IMC) on a dark night, and the pilot exceeding the design stress limits of the aircraft while attempting to recover from uncontrolled flight. Factors…

## 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" = 'IL' AND c."eventCountry" = 'USA'
  AND c."highestInjuryLevel" = 'Fatal'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41533'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41533&fatal=1&state=IL

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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.