# NTSB investigations: Lycoming R680-4P-B4, CA

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 WPR21LA208](https://openairdocs.org/ntsb/WPR21LA208.md): Boeing A75N1(PT17) · Hollister, CA · Accident · Minor injuries · Class 3 · Limited · Final report · May 26, 2021 · N75016 · Substantial damage
  > The improper installation of a relief valve spring that was shorter than the standard spring length, which slowed the response of the propeller governor to change the pitch of the blades during climbout, resulting in a partial loss of power.
- [NTSB LAX06LA056](https://openairdocs.org/ntsb/LAX06LA056.md): Boeing B75N1 · Corona, CA · Accident · No injuries · Limited investigation · Final report · Dec 11, 2005 · N65696 · 2 aircraft · Substantial damage
  > failure of both pilots to see and avoid each other during traffic pattern operations at a non-towered airport.
- [NTSB LAX76FUG58](https://openairdocs.org/ntsb/LAX76FUG58.md): Stinson V-77 · 29 Palms, CA · Accident · Serious injuries · Closed · Jun 22, 1976 · N69747 · Destroyed
- [NTSB LAX76FUQ14](https://openairdocs.org/ntsb/LAX76FUQ14.md): Stinson V-77 · Pacoima, CA · Accident · No injuries · Closed · Nov 12, 1975 · N69986 · Substantial damage
- [NTSB OAK75DVG48](https://openairdocs.org/ntsb/OAK75DVG48.md): Stearman A75N1 · Orland, CA · Accident · No injuries · Closed · Mar 14, 1975 · N4763V · Substantial damage
- [NTSB LAX75FUG01](https://openairdocs.org/ntsb/LAX75FUG01.md): Naval Fcty N3N-3 · Lucerne, CA · Accident · Minor injuries · Closed · Jul 21, 1974 · N44760 · Substantial damage
- [NTSB OAK70DVG07](https://openairdocs.org/ntsb/OAK70DVG07.md): Boeing E-75 · Willows, CA · Accident · No injuries · Closed · Apr 8, 1970 · N4763V · 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" = 'CA' 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 ('41542'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41542&state=CA

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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.