# NTSB investigations: Lycoming O-540-F1B5, 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 CEN21LA350](https://openairdocs.org/ntsb/CEN21LA350.md): Robinson Helicopter R44 · Waukon, IA · Accident · Minor injuries · Class 4 · Limited · Final report · Aug 4, 2021 · N775AK · Substantial damage
  > The pilot’s failure to maintain adequate clearance from a powerline during an agricultural application pass.
- [NTSB CEN21LA452](https://openairdocs.org/ntsb/CEN21LA452.md): Robinson Helicopter R44 · Mineral Point, WI · Accident · No injuries · Class 4 · Limited · Final report · Jul 20, 2021 · N44XB · Substantial damage
  > The pilot’s failure to see and avoid a wire during an aerial application flight, resulting in a collision with the wire.
- [NTSB ERA21FA200](https://openairdocs.org/ntsb/ERA21FA200.md): Robinson Helicopter R44 · Wingate, NC · Accident · 1 fatal · Class 3 · Field · Final report · May 2, 2021 · N4528T · Substantial damage
  > The pilot’s failure to maintain clearance from a power line during a low-level aerial application flight, resulting in tail rotor impact with the power line, a loss of control, and subsequent impact with the ground.
- [NTSB ERA21LA191](https://openairdocs.org/ntsb/ERA21LA191.md): Robinson Helicopter R44 · Forkston, PA · Accident · 1 fatal · Class 3 · Limited · Final report · Apr 23, 2021 · N4055N · Destroyed
  > The pilot’s inadequate preflight weather planning, which resulted in an inadvertent encounter with instrument meteorological conditions at night, spatial disorientation, and collision with terrain.

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

This list as a web page: https://openairdocs.org/ntsb?engine=42353&year=2021

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