# NTSB investigations: Lycoming IO-540 series, SD

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 CEN20CA086](https://openairdocs.org/ntsb/CEN20CA086.md): Cessna 182 · Huron, SD · Accident · No injuries · Data collection · Final report · Feb 15, 2020 · N2019A · Substantial damage
  > The pilot's failure to maintain adequate airspeed during final approach, which resulted in the airplane exceeding its critical angle of attack and a subsequent aerodynamic stall at too low of an altitude to recover.
- [NTSB GAA15CA196](https://openairdocs.org/ntsb/GAA15CA196.md): Robinson Helicopter R44 II · Forest City, SD · Accident · No injuries · Data collection · Final report · Jul 2, 2015 · N824DK · Substantial damage
  > The pilot's failure to monitor the flight environment for adequate terrain/obstacle clearance during takeoff, which resulted in the inflight collision with power transmission line wires.
- [NTSB CEN13LA228](https://openairdocs.org/ntsb/CEN13LA228.md): Robinson Helicopter R44 II · Buffalo, SD · Accident · No injuries · Limited investigation · Final report · Apr 13, 2013 · N424DP · Substantial damage
  > The pilot’s failure to maintain adequate main rotor rpm while maneuvering at a low altitude in gusting wind conditions, which resulted in an emergency landing on uneven terrain.
- [NTSB CEN11LA399](https://openairdocs.org/ntsb/CEN11LA399.md): Piper PA-36-300 · Highmore, SD · Accident · 1 fatal · Limited investigation · Final report · Jun 17, 2011 · N57885 · Substantial damage
  > The pilot did not maintain control of the airplane while maneuvering at low altitude.
- [NTSB CHI91DTK05](https://openairdocs.org/ntsb/CHI91DTK05.md): Eagle DW1 · Hurley, SD · Accident · No injuries · Final report · Sep 10, 1991 · N8814L · Substantial damage
  > The failure of the pilot to maintain a visual lookout.
- [NTSB DEN88DTK01](https://openairdocs.org/ntsb/DEN88DTK01.md): Eagle DW-1 · Ferney, SD · Accident · Serious injuries · Final report · Jun 4, 1988 · N8802Z · Destroyed
  > The ag plt reported that he encountered a 'dust devil' while in a climbing turn during a turnaround at the end of a swath run. He said he attempted to counter the turbulence enduced roll with appropriate flt control inputs but the acft did not recover and…
- [NTSB DEN84LA215](https://openairdocs.org/ntsb/DEN84LA215.md): Eagle DW-1 · Marion, SD · Accident · No injuries · Limited investigation · Final report · Jun 25, 1984 · N8802R · Substantial damage
  > In cruise flt, oil covered the windscreen and plt elected a precautionary landing on a dirt road. Acft collided with a mailbox on roll out and nosed over. Oil filler cap found loose.

## 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" = 'SD' 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=SD

---
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.