# NTSB investigations: Lycoming IGSO-540-B1A, MN

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 CEN21LA101](https://openairdocs.org/ntsb/CEN21LA101.md): Beech 65-A80-8800 · Alexandria, MN · Accident · No injuries · Class 3 · Limited · Final report · Dec 29, 2020 · N134BA · Substantial damage
  > The pilot’s decision to attempt takeoff with frost covering the airplane and rotating below the published rotation speed, which led to exceedance of the airplane’s critical angle of attack and an aerodynamic stall.
- [NTSB CHI99LA008](https://openairdocs.org/ntsb/CHI99LA008.md): Beech 65-B80 · Brainerd, MN · Accident · Minor injuries · Limited investigation · Final report · Oct 17, 1998 · N138BA · Substantial damage
  > the pilot's failure to maintain the proper glidepath and his diversion of attention during a critical phase of flight.
- [NTSB MKC72FER45](https://openairdocs.org/ntsb/MKC72FER45.md): Beech 65-80 · Mankato, MN · Accident · No injuries · Closed · Mar 26, 1972 · N270D · Substantial damage

## 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" = 'MN' 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 ('41535'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41535&state=MN

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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.