# NTSB investigations: Lycoming O-540-F1B5, 2023

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 ERA24LA079](https://openairdocs.org/ntsb/ERA24LA079.md): Robinson Helicopter R44 · Daytona Beach, FL · Accident · No injuries · Class 4 · Limited · Final report · Dec 30, 2023 · N828AK · 2 aircraft · Substantial damage
  > The UAS operator’s failure to operate within the limitations of the COA that he was using to operate inside class C airspace, which resulted in a collision between the UAS and the helicopter.
- [NTSB OPS24LA011](https://openairdocs.org/ntsb/OPS24LA011.md): Diamond Aircraft Ind DA20-C1 · North Las Vegas, NV · Incident · No injuries · Class 4 · Limited · Final report · Dec 9, 2023 · N857PA · 2 aircraft · No damage
  > The local controller’s loss of situational awareness, inadequate provision of traffic advisory or safety alert information, and lack of positive control, that resulted in a near-midair collision.
- [NTSB CEN24LA027](https://openairdocs.org/ntsb/CEN24LA027.md): Robinson Helicopter R44 · Rowlett, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Oct 26, 2023 · N141CD · Substantial damage
  > A malfunction of the helicopter’s Engine Monitoring Unit (EMU)/Governor Controller for undetermined reasons. Contributing to the accident was the flight instructor’s failure to turn off the EMU/Governor Controller per the emergency checklist when the…
- [NTSB CEN24LA004](https://openairdocs.org/ntsb/CEN24LA004.md): Robinson Helicopter R44 · Hochatown, OK · Accident · No injuries · Class 3 · Limited · Final report · Oct 1, 2023 · N379SH · Substantial damage
  > A total loss of engine power during a practice autorotation due to the improper engine idle setting and rigging of the carburetor heat control which resulted in a hard landing.
- [NTSB ERA23LA350](https://openairdocs.org/ntsb/ERA23LA350.md): Robinson Helicopter R44 · Immokalee, FL · Accident · Serious injuries · Class 4 · Limited · Final report · Aug 26, 2023 · N4147Q · Substantial damage
  > The flight instructor’s inadequate supervision of the student pilot during hover flight, which resulted in main rotor blade contact with the ground after the student pilot applied a sudden control input.
- [NTSB CEN23LA328](https://openairdocs.org/ntsb/CEN23LA328.md): Robinson Helicopter R44 · Hanlontown, IA · Accident · No injuries · Class 4 · Limited · Final report · Jul 26, 2023 · N467HA · Substantial damage
  > The pilot’s failure to maintain clearance from a cable during spray operations.
- [NTSB CEN23LA219](https://openairdocs.org/ntsb/CEN23LA219.md): Robinson Helicopter R44 · Pontiac, MI · Accident · No injuries · Class 4 · Limited · Final report · May 31, 2023 · N7102Z · Substantial damage
  > The flight crew’s inadequate compensation for gusting wind, and the flight instructor’s delayed remedial action, which resulted in impact with the ground.
- [NTSB CEN23LA130](https://openairdocs.org/ntsb/CEN23LA130.md): Robinson Helicopter R44 · De Kalb, TX · Accident · Serious injuries · Class 3 · Limited · Final report · Mar 11, 2023 · N4164T · Substantial damage
  > The pilot’s inability to maintain control of the helicopter due to his failure to maintain rotor speed. Contributing to the accident was the failure of the helicopter’s low rotor speed warning system.

## 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 year(c."eventDate") = 2023
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('42353'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=42353&year=2023

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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.