# NTSB investigations: Lycoming IO-540-AE1A5, 2025

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 CEN25LA389](https://openairdocs.org/ntsb/CEN25LA389.md): Robinson Helicopter R44 · Decatur, TX · Accident · No injuries · Class 4 · Limited · Final report · Sep 19, 2025 · N831VA · Substantial damage
  > The pilot’s loss of control during an off-airport, pinnacle landing, and the flight instructor’s inadequate supervision of the instructional flight.
- [NTSB WPR25LA262](https://openairdocs.org/ntsb/WPR25LA262.md): Robinson Helicopter R44 II · Burlington, WA · Accident · Minor injuries · Class 4 · Limited · Final report · Aug 18, 2025 · N877DR · Substantial damage
  > The pilot’s failure to see and avoid the light pole, which resulted in a collision with the light pole and subsequent ground impact.
- [NTSB CEN25LA326](https://openairdocs.org/ntsb/CEN25LA326.md): Robinson Helicopter R44 II · Cape Girardeau, MO · Accident · No injuries · Class 3 · Limited · Preliminary report · Aug 16, 2025 · N24DF · Substantial damage
  > On August 16, 2025, at 1150 central daylight time, a Robinson R44 II helicopter, N24DF was substantially damaged when it was involved in an accident near Cape Girardeau, Missouri. The pilot and three passengers were not injured. The helicopter was operated as…
- [NTSB WPR25LA239](https://openairdocs.org/ntsb/WPR25LA239.md): Robinson Helicopter R44 II · Ponderosa Pines, MT · Accident · Minor injuries · Class 4 · Limited · Final report · Aug 3, 2025 · N750GT · Substantial damage
  > The pilot’s improper pedal application during an approach to a hover.
- [NTSB ERA25LA267](https://openairdocs.org/ntsb/ERA25LA267.md): Robinson Helicopter R44 II · Inlet, NY · Accident · No injuries · Class 4 · Limited · Final report · Jul 9, 2025 · N67RW · Substantial damage
  > The pilot’s failure to maintain control of the helicopter during the landing.
- [NTSB CEN25LA237](https://openairdocs.org/ntsb/CEN25LA237.md): Robinson Helicopter R44 II · Pecos, TX · Accident · Serious injuries · Class 4 · Limited · Final report · Jul 4, 2025 · N992TP · Substantial damage
  > The pilot’s failure to maintain aircraft control during gusty wind conditions.
- [NTSB ANC25LA064](https://openairdocs.org/ntsb/ANC25LA064.md): Robinson Helicopter R44 II · Palmer, AK · Accident · No injuries · Class 4 · Limited · Final report · Jun 30, 2025 · N531AT · Substantial damage
  > The pilot’s diverted attention during takeoff in flat light conditions, which resulted in a loss of visual reference with terrain.
- [NTSB ERA25LA240](https://openairdocs.org/ntsb/ERA25LA240.md): Robinson Helicopter R44 II · Hawesville, KY · Accident · Serious injuries · Class 4 · Limited · Final report · Jun 25, 2025 · N144WK · Substantial damage
  > The pilot’s failure to maintain clearance from power lines during low-level agricultural spray operations.
- [NTSB CEN25FA183](https://openairdocs.org/ntsb/CEN25FA183.md): Robinson Helicopter R44 II · Miami, TX · Accident · 1 fatal · Class 3 · Field · Preliminary report · May 23, 2025 · N1195P · Destroyed
  > On May 23, 2025, about 0718 central daylight time, a Robinson Helicopter Company R44 II helicopter, N1195P, was destroyed when it was involved in an accident near Miami, Texas. The student pilot was fatally injured. The helicopter was operated as a Title 14…
- [NTSB WPR25LA110](https://openairdocs.org/ntsb/WPR25LA110.md): Robinson Helicopter R44 II · Las Vegas, NV · Accident · Minor injuries · Class 3 · Limited · Final report · Mar 10, 2025 · N44KY · Substantial damage
  > The pilot’s loss of helicopter control after the door opened during takeoff. Contributing to the accident was the pilot’s failure to confirm that the door was properly closed before departure.
- [NTSB CEN25LA116](https://openairdocs.org/ntsb/CEN25LA116.md): Robinson Helicopter R44 II · Chicago, IL · Accident · No injuries · Class 3 · Limited · Preliminary report · Mar 10, 2025 · N128AF · Substantial damage
  > On March 10, 2025, about 18:30 central daylight time, a Robinson Helicopter R44 II, N128AF was substantially damaged when it was involved in an accident near Chicago, Illinois. The pilot and both passengers were not injured. The helicopter was operated under…
- [NTSB CEN25LA105](https://openairdocs.org/ntsb/CEN25LA105.md): Robinson Helicopter R44 II · Edgemont, SD · Accident · Serious injuries · Class 3 · Limited · Final report · Feb 27, 2025 · N6555C · No damage
  > The pilot’s failure to properly identify the proper anchor point for the supplemental harness and the crew’s incorrect use of the restraint system structure as an anchor point, which resulted in the separation of the structure.
- [NTSB CEN25FA104](https://openairdocs.org/ntsb/CEN25FA104.md): Robinson Helicopter R44 · Uvalde, TX · Accident · 2 fatal · Class 3 · Field · Preliminary report · Feb 27, 2025 · N144SG · Substantial damage
  > On February 27, 2025, about 1319 central standard time, a Robinson Helicopter Company (RHC) R44 helicopter, N144SG, sustained substantial damage when it was involved in an accident near Uvalde, Texas. The commercial pilot and the passenger sustained fatal…

## 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") = 2025
  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&year=2025

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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.