# NTSB investigations: Lycoming IO-540-AE1A5, 2024

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 WPR25LA034](https://openairdocs.org/ntsb/WPR25LA034.md): Robinson Helicopter R44 II · Durkee, OR · Accident · No injuries · Class 3 · Limited · Final report · Nov 7, 2024 · N4361R · Substantial damage
  > The pilot's inadequate performance planning, which resulted in insufficient engine power to transition into an out-of-ground-effect hover at a high gross weight.
- [NTSB CEN25FA034](https://openairdocs.org/ntsb/CEN25FA034.md): Robinson Helicopter R44 II · Iowa, LA · Accident · 3 fatal · Class 3 · Field · Preliminary report · Nov 2, 2024 · N62CD · Destroyed
  > On November 1, 2024, about 2106 central daylight time, a Robinson R-44 II helicopter, N62CD, was destroyed when it was involved in an accident near Iowa, Louisiana. The pilot and two passengers were fatally injured. The helicopter was operated as a Title 14…
- [NTSB ERA24LA393](https://openairdocs.org/ntsb/ERA24LA393.md): Robinson Helicopter R44 II · Ravenel, SC · Accident · No injuries · Class 4 · Limited · Final report · Sep 23, 2024 · N153LA · Substantial damage
  > The pilot’s failure to maintain clearance from terrain, which resulted in the right skid contacting the ground and a subsequent rollover.
- [NTSB WPR24LA307](https://openairdocs.org/ntsb/WPR24LA307.md): Robinson Helicopter R44 II · Basin, MT · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 15, 2024 · N233WT · Substantial damage
  > The pilot’s decision to continue performing a high-performance takeoff in a full throttle and low-rotor-rpm condition, which resulted in a loss of control and subsequent impact with terrain.
- [NTSB ANC24LA079](https://openairdocs.org/ntsb/ANC24LA079.md): Robinson Helicopter R44 II · Palmer, AK · Accident · Minor injuries · Class 4 · Limited · Final report · Aug 18, 2024 · N783AK · Substantial damage
  > The pilot's failure to follow the operator’s procedure manual and attempted to land at a remote landing zone in high wind conditions. Contributing factor was the pilot’s decision to not conduct a fly over of the landing site to determine wind condition which…
- [NTSB WPR24LA241](https://openairdocs.org/ntsb/WPR24LA241.md): Robinson Helicopter R44 II · Herriman, UT · Accident · No injuries · Class 3 · Limited · Final report · Jul 13, 2024 · N6960 · Substantial damage
  > A hard landing following a total loss of engine power due to fuel starvation as a result of the improper idle setting of the helicopter’s engine. Contributing to the loss of engine power was the instructor’s reduction of engine power past that recommended by…
- [NTSB ANC24FA063](https://openairdocs.org/ntsb/ANC24FA063.md): Robinson Helicopter R44 · Kekaha, HI · Accident · 3 fatal · Class 3 · Field · Final report · Jul 11, 2024 · N144KW · Substantial damage
  > An encounter with turbulence due to downdraft winds that resulted in mast bumping and an in-flight breakup.
- [NTSB CEN24LA252](https://openairdocs.org/ntsb/CEN24LA252.md): Robinson Helicopter R44 II · New Florence, MO · Accident · No injuries · Class 4 · Limited · Final report · Jul 4, 2024 · N225AM · Substantial damage
  > The pilot’s failure to maintain proper altitude/clearance from a dead tree limb during an aerial application flight.
- [NTSB WPR24FA200](https://openairdocs.org/ntsb/WPR24FA200.md): Robinson Helicopter R44 II · Bluestem, WA · Accident · 2 fatal · Class 3 · Field · Final report · Jun 19, 2024 · N323TT · Destroyed
  > The pilot’s failure to manage main rotor rpm during an autorotation, which resulted in a loss of helicopter control. Contributing to the accident was a loss of power for reasons that could not be determined.
- [NTSB ERA24LA236](https://openairdocs.org/ntsb/ERA24LA236.md): Robinson R44 · Gilbertsville, KY · Accident · No injuries · Class 4 · Limited · Final report · Jun 2, 2024 · N220SW · Substantial damage
  > The pilot's failure to maintain control of the helicopter while attempting to take off from sloping terrain.
- [NTSB ERA24LA171](https://openairdocs.org/ntsb/ERA24LA171.md): Robinson Helicopter R44 II · South Kingstown, RI · Accident · No injuries · Class 4 · Limited · Final report · Apr 9, 2024 · N331EL · Substantial damage
  > The pilot’s failure to maintain clearance from the water while maneuvering at low altitude.
- [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.

## 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") = 2024
  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=2024

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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.