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

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 CEN24LA135](https://openairdocs.org/ntsb/CEN24LA135.md): Robinson Helicopter R44 · Knox City, TX · Accident · No injuries · Class 4 · Limited · Final report · Mar 13, 2024 · N3040P · Substantial damage
  > The pilot’s failure to maintain directional control during takeoff, which resulted in a rollover and an impact with terrain.
- [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 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.
- [NTSB CEN22FA151](https://openairdocs.org/ntsb/CEN22FA151.md): Robinson Helicopter R44 · Rowlett, TX · Accident · 2 fatal · Class 3 · Field · Final report · Mar 25, 2022 · N514CD · Destroyed
  > A loss of helicopter control while maneuvering, which resulted in main rotor blade contact with the tailboom in flight, tail boom separation, and an uncontrolled descent.
- [NTSB CEN21LA084](https://openairdocs.org/ntsb/CEN21LA084.md): Robinson R44 · Colorado City, TX · Accident · 2 fatal · Class 3 · Limited · Final report · Dec 10, 2020 · N7085Z · Destroyed
  > The pilot’s loss of control and exceedance of performance and/or structural limitations during low-altitude operations, which resulted in an inflight breakup.. Contributing to the accident was the pilot’s impairment from the effects of tetrahydrocannabinol.
- [NTSB GAA19CA063](https://openairdocs.org/ntsb/GAA19CA063.md): Robinson R44 · Knox City, TX · Accident · No injuries · Data collection · Final report · Nov 18, 2018 · N4167Y · Substantial damage
  > The pilot's failure to maintain adequate airspeed with a tailwind, which resulted in the helicopter settling with power, and his subsequent incorrect collective application while attempting to recover, which resulted in a loss of helicopter control due to a…
- [NTSB GAA18CA247](https://openairdocs.org/ntsb/GAA18CA247.md): Robinson Helicopter R44 · Sonora, TX · Accident · No injuries · Data collection · Final report · Apr 18, 2018 · N4487D · Substantial damage
  > The pilot’s failure to maintain clearance from trees while maneuvering at a low altitude.
- [NTSB CEN11CA627](https://openairdocs.org/ntsb/CEN11CA627.md): Robinson Helicopter R44 · Batesville, TX · Accident · No injuries · Data collection · Final report · Aug 26, 2011 · N99FJ · Substantial damage
  > The pilot’s inadequate preflight inspection that failed to ensure all tie-down clamps were removed prior to takeoff, which resulted in the helicopter’s dynamic rollover.
- [NTSB DFW08LA020](https://openairdocs.org/ntsb/DFW08LA020.md): Robinson R-44 · Catarina, TX · Accident · No injuries · Limited investigation · Final report · Oct 24, 2007 · N744RG · Substantial damage
  > The loss of control due to the pilot's failure to maintain clearance with trees while hovering. A contributing factor was the low altitude.

## 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" = 'TX' 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 ('42353'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

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

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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.