# NTSB investigations: Lycoming IO-540 series, NH

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 ERA22LA236](https://openairdocs.org/ntsb/ERA22LA236.md): Robinson Helicopter R44 II · Nashua, NH · Accident · Minor injuries · Class 4 · Limited · Final report · May 23, 2022 · N666U · Substantial damage
  > The flight instructor’s failure to maintain control of the helicopter during the takeoff, which resulted in a dynamic rollover.
- [NTSB ERA20CA098](https://openairdocs.org/ntsb/ERA20CA098.md): Maule M7 · Manchester, NH · Accident · No injuries · Data collection · Final report · Feb 2, 2020 · N309MA · Substantial damage
  > The pilot's improper landing flare in crosswind conditions, which resulted in a bounced landing, and his subsequent failure to maintain directional control, which resulted in a ground-loop.
- [NTSB NYC04CA002](https://openairdocs.org/ntsb/NYC04CA002.md): Lake LA250 · Laconia, NH · Accident · No injuries · Data collection · Final report · Oct 6, 2003 · N64SF · Substantial damage
  > The pilot's improper starting procedure. A factor in the accident was the pilot's lack of recent experience in make and model airplane.
- [NTSB IAD99FA025](https://openairdocs.org/ntsb/IAD99FA025.md): Lake LA-4-250 · Laconia, NH · Accident · 1 fatal · Field investigation · Final report · Jan 4, 1999 · N14001 · Destroyed
  > A loss of engine power during initial climb due to oil starvation. Contributing to the accident was the failure to perform an engine overhaul.
- [NTSB NYC87LA198](https://openairdocs.org/ntsb/NYC87LA198.md): Lake LA-250 · Alton Bay, NH · Accident · No injuries · Limited investigation · Final report · Jul 6, 1987 · N1403W · Substantial damage
  > The Lake renegade 250 was making a water takeoff when it started a sharp left turn. The aircraft stopped in the water and the pilot exited without injuries prior to the aircraft turning over. Examination of the aircraft showed that the engine pylon had…

## 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" = 'NH' 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=NH

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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.