# NTSB investigations: Lycoming TIO-540-AE2A: Runway excursion

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 CEN21LA137](https://openairdocs.org/ntsb/CEN21LA137.md): Piper PA46R-350T · Kansas City, MO · Accident · No injuries · Class 3 · Limited · Final report · Feb 22, 2021 · N560CA · Substantial damage
  > The loss of directional control during landing for reasons that could not be determined.
- [NTSB CEN18LA383](https://openairdocs.org/ntsb/CEN18LA383.md): Piper PA46 · Santa Teresa, NM · Accident · No injuries · Limited investigation · Final report · Aug 31, 2018 · N747DA · Substantial damage
  > The pilot's decision to attempt to take off in an overweight airplane in high density altitude conditions, which resulted in the airplane’s inability to climb, an aborted takeoff, and a subsequent runway excursion.
- [NTSB GAA16CA069](https://openairdocs.org/ntsb/GAA16CA069.md): Piper PA 46-350P · Mammoth, CA · Accident · No injuries · Data collection · Final report · Dec 3, 2015 · N546C · Substantial damage
  > The pilot's decision to takeoff in high crosswind conditions resulting in the inability to maintain an adequate crosswind correction, consequently failing to maintain directional control and departing the runway, and subsequently colliding with fixed airfield…

## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41999', '40999')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '300'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/300/cases?engine=41999

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