# NTSB investigations: Lycoming IO-540 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 CEN22LA366](https://openairdocs.org/ntsb/CEN22LA366.md): Robinson Helicopter R44 II · Maynard, IA · Accident · No injuries · Class 4 · Limited · Final report · Aug 5, 2022 · N619RB · Substantial damage
  > An impact with a powerline as a result of an unexpected wind gust.
- [NTSB CEN20LA330](https://openairdocs.org/ntsb/CEN20LA330.md): Robinson R44 · Logan, IA · Accident · Serious injuries · Class 3 · Limited · Final report · Aug 8, 2020 · N89LA · Substantial damage
  > The failure of the lower actuator bearing support brackets, which resulted in the misalignment of the clutch actuator, a loss of belt tension on the main rotor drive system, and a subsequent forced landing.
- [NTSB CEN17CA346](https://openairdocs.org/ntsb/CEN17CA346.md): Robinson Helicopter R44 II · Logan, IA · Accident · Minor injuries · Data collection · Final report · Jul 20, 2017 · N192E · Substantial damage
  > The pilot’s failure to maintain clearance from a wire during an agricultural application flight.
- [NTSB GAA17CA422](https://openairdocs.org/ntsb/GAA17CA422.md): Piper PA32 · Marion, IA · Accident · No injuries · Data collection · Final report · Jul 15, 2017 · N31841 · Substantial damage
  > The pilot’s failure to maintain directional control during the landing roll.
- [NTSB CEN14LA487](https://openairdocs.org/ntsb/CEN14LA487.md): Robinson Helicopter R44 II · Macedonia, IA · Accident · 1 fatal · Limited investigation · Final report · Sep 6, 2014 · N699TQ · Substantial damage
  > The pilot’s inadequate visual lookout, which resulted in a collision with a static line.
- [NTSB CEN12LA443](https://openairdocs.org/ntsb/CEN12LA443.md): Robinson Helicopter R44 II · Red Oak, IA · Accident · No injuries · Limited investigation · Final report · Jul 14, 2012 · N556MM · Substantial damage
  > The pilot's failure to maintain clearance from the ground-support vehicle during landing.
- [NTSB CEN11LA066](https://openairdocs.org/ntsb/CEN11LA066.md): Gearn Geary D Swearingen SX300 · Milford, IA · Accident · 1 fatal · Limited investigation · Final report · Nov 10, 2010 · N3ZX · Substantial damage
  > A loss of control for undetermined reasons.
- [NTSB CHI94LA255](https://openairdocs.org/ntsb/CHI94LA255.md): Piper PA-32-300 · Marshalltown, IA · Accident · No injuries · Limited investigation · Final report · Jul 29, 1994 · N8144Y · Substantial damage
  > A partial loss of engine power for undetermined reasons.
- [NTSB MKC81DCD13](https://openairdocs.org/ntsb/MKC81DCD13.md): Piper PA32RT · Waterloo, IA · Accident · No injuries · Closed · Apr 3, 1981 · N36150 · Substantial damage
- [NTSB MKC66D0324](https://openairdocs.org/ntsb/MKC66D0324.md): Piper PA-24 · Mt Ayr, IA · Accident · No injuries · Closed · Nov 14, 1965 · N8847P · 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" = '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 ('41530', '41585'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41530&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.