# NTSB investigations: Lycoming IO-540-AE1A5, FL

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 ANC26LA084](https://openairdocs.org/ntsb/ANC26LA084.md): Robinson Helicopter R44 II · Anthony, FL · Accident · Minor injuries · Class 3 · Limited · Preliminary report · Aug 13, 2026 · N861MP · Substantial damage
  > On August 12, 2026, at approximately 2305 eastern daylight time, a Robinson R44 Raven II helicopter, N861MP, was substantially damaged when it was involved in an accident near Anthony, Florida. The pilot and passenger sustained minor injuries. The helicopter…
- [NTSB ERA24LA118](https://openairdocs.org/ntsb/ERA24LA118.md): Robinson Helicopter R44 II · Miami, FL · Accident · No injuries · Class 4 · Limited · Final report · Feb 1, 2024 · N521LS · Substantial damage
  > Tail rotor contact with an unseen object while performing a precautionary landing to a closed helipad at night.
- [NTSB ERA23LA228](https://openairdocs.org/ntsb/ERA23LA228.md): Robinson Helicopter R44 II · Bradenton, FL · Accident · No injuries · Class 4 · Limited · Final report · May 11, 2023 · N62HT · Substantial damage
  > The pilot’s failure to maintain adequate rotor rpm during landing which resulted in a premature landing on uneven ground and a subsequent rollover.
- [NTSB ERA22FA098](https://openairdocs.org/ntsb/ERA22FA098.md): Robinson Helicopter R44 II · Bronson, FL · Accident · 4 fatal · Class 3 · Field · Final report · Dec 31, 2021 · N442VB · Destroyed
  > A loss of control due to spatial disorientation as a result of the noninstrument-rated pilot’s improper decision to attempt a visual flight rules flight at night into an area of known reduced visibility due to fog.
- [NTSB ERA21LA387](https://openairdocs.org/ntsb/ERA21LA387.md): Robinson Helicopter R44 II · Miami, FL · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 28, 2021 · N212HT · Substantial damage
  > The pilot’s loss of helicopter control after landing. Also causal was the pilot’s intentional operation of the helicopter without the required training, experience, and endorsements.
- [NTSB ERA19FA142](https://openairdocs.org/ntsb/ERA19FA142.md): Robinson R44 II · Tampa, FL · Accident · 1 fatal · Field investigation · Final report · Apr 4, 2019 · N4046J · Substantial damage
  > Contamination of and an inadequate bond between the two layers of fabric comprising the helicopter engine's air induction inlet duct, which resulted a partial collapse of the duct, obstruction of the airflow into the engine, and a total loss of engine power.
- [NTSB ERA15FA164](https://openairdocs.org/ntsb/ERA15FA164.md): Robinson Helicopter R44 II · Orlando, FL · Accident · 3 fatal · Field investigation · Final report · Mar 22, 2015 · N30242 · Destroyed
  > An inflight loss of control due to the likely detachment of the forward left servo control tube upper rod end attachment bolt.
- [NTSB ERA11CA180](https://openairdocs.org/ntsb/ERA11CA180.md): Robinson Helicopter R44 II · Weston, FL · Accident · Serious injuries · Data collection · Final report · Mar 5, 2011 · N4168W · Substantial damage
  > The pilot's failure to maintain adequate altitude and physical alertness which resulted in an in-flight collision with the water. Contributing to the accident was the pilot's fatigue.
- [NTSB ERA09LA421](https://openairdocs.org/ntsb/ERA09LA421.md): Robinson Helicopter R44 II · Dunedin, FL · Accident · No injuries · Limited investigation · Final report · Jul 24, 2009 · N645JC · Substantial damage
  > A partial loss of engine power for undetermined reasons.
- [NTSB MIA07LA059](https://openairdocs.org/ntsb/MIA07LA059.md): Robinson R-44-II · Miami, FL · Accident · No injuries · Limited investigation · Final report · Mar 15, 2007 · N196DM · Substantial damage
  > The pilot's failure to maintain sufficient rotor rpm during an autorotative landing, which resulted in a hard landing and separation of the tailboom.

## 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" = 'FL' 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 ('41899'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41899&state=FL

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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.