# NTSB investigations: Lycoming IO-540-AE1A5, 2021

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 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 CEN22LA034](https://openairdocs.org/ntsb/CEN22LA034.md): Robinson Helicopter R44 II · Fort Davis, TX · Accident · Minor injuries · Class 4 · Limited · Final report · Nov 10, 2021 · N3027W · Substantial damage
  > The pilot’s encounter of a downdraft from which there was insufficient altitude to recover.
- [NTSB ERA22FA010](https://openairdocs.org/ntsb/ERA22FA010.md): Robinson Helicopter R44 II · Cornwall, NY · Accident · 1 fatal · Class 3 · Field · Final report · Oct 10, 2021 · N637HP · Destroyed
  > The non-instrument-rated pilot’s continued flight into deteriorating weather conditions, which resulted in a loss of control due to spatial disorientation.
- [NTSB ANC22LA001](https://openairdocs.org/ntsb/ANC22LA001.md): Robinson Helicopter R44 II · Palmer, AK · Accident · No injuries · Class 4 · Limited · Final report · Oct 10, 2021 · N555EL · 2 aircraft · Substantial damage
  > The unmanned aircraft pilot’s failure to yield the right of way to the helicopter.
- [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 CEN21LA369](https://openairdocs.org/ntsb/CEN21LA369.md): Robinson Helicopter R44 II · Wheeling, IL · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 11, 2021 · N4043B · Substantial damage
  > A partial loss of engine power for reasons that could not be determined based on available information.
- [NTSB CEN21LA349](https://openairdocs.org/ntsb/CEN21LA349.md): Robinson Helicopter R44 II · Randolph, WI · Accident · Serious injuries · Class 4 · Limited · Final report · Jul 31, 2021 · N285RG · Substantial damage
  > The pilot’s failure to maintain clearance from power lines during a low-level aerial application flight.
- [NTSB CEN21LA339](https://openairdocs.org/ntsb/CEN21LA339.md): Robinson Helicopter R44 II · West Liberty, IA · Accident · Minor injuries · Class 4 · Limited · Final report · Jul 20, 2021 · N983HA · Substantial damage
  > The pilot’s failure to see and avoid a wire while maneuvering at low altitude during an aerial application flight, resulting in a collision with the wire.
- [NTSB ERA21LA295](https://openairdocs.org/ntsb/ERA21LA295.md): Robinson Helicopter R44 II · Point Harbor, NC · Accident · 2 fatal · Class 3 · Limited · Final report · Jul 19, 2021 · N4529J · Destroyed
  > The noncertificated pilot’s decision to continue visual flight rules flight into instrument meteorological conditions, which resulted in spatial disorientation over a large body of water and a high velocity impact with the water. Contributing to the accident…
- [NTSB CEN21FA330](https://openairdocs.org/ntsb/CEN21FA330.md): Robinson R44 · Elgin, MN · Accident · 1 fatal · Class 3 · Field · Final report · Jul 19, 2021 · N44BJ · Destroyed
  > The pilot’s decision to operate the helicopter under powerlines, which resulted in a main rotor blade striking a powerline, causing the helicopter to descend from a low altitude and impact terrain.
- [NTSB ERA21LA292](https://openairdocs.org/ntsb/ERA21LA292.md): Robinson Helicopter R44 II · Princeton, KY · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 16, 2021 · N512RT · Substantial damage
  > The pilot’s inadequate preflight planning in that he failed to accurately determine the takeoff weight of the helicopter, which resulted in exceeding the helicopter’s maximum weight capability.
- [NTSB CEN21LA284](https://openairdocs.org/ntsb/CEN21LA284.md): Robinson Helicopter R44 II · Reserve, LA · Accident · No injuries · Class 3 · Limited · Final report · Jun 10, 2021 · N202SM · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB CEN21LA173](https://openairdocs.org/ntsb/CEN21LA173.md): Robinson Helicopter R44 II · Dustin, OK · Accident · Serious injuries · Class 3 · Limited · Final report · Mar 26, 2021 · N178DF · Substantial damage
  > The pilot’s insufficient monitoring of the helicopter’s power while flying at low altitude and at low airspeed, which resulted in the loss of rotor rpm and impact with a tree and terrain.
- [NTSB GAA21WA047](https://openairdocs.org/ntsb/GAA21WA047.md): Robinson Helicopter R44 II · Rosh Pinna, Israel · Accident · Minor injuries · Class 5 · Foreign · Mar 13, 2021 · N97KC · Substantial damage
- [NTSB CEN21LA109](https://openairdocs.org/ntsb/CEN21LA109.md): Robinson Helicopter R44 II · Albany, TX · Accident · No injuries · Class 3 · Limited · Final report · Jan 9, 2021 · N322SH · Substantial damage
  > The pilot’s inadequate pretakeoff checks which resulted in the magneto switch (key) remaining in the OFF position during the takeoff sequence and initial climb and the right magneto grounding intermittently.

## 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") = 2021
  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=2021

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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.