# NTSB investigations: Schweizer TH55A/269A

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 CEN21LA253](https://openairdocs.org/ntsb/CEN21LA253.md): Schweizer TH55A/269A · Monroe, LA · Accident · No injuries · Class 4 · Limited · Final report · Jun 3, 2021 · N41G · Substantial damage
  > The pilot’s failure to maintain yaw control during landing which resulted in a loss of tail rotor effectiveness.
- [NTSB CEN12CA402](https://openairdocs.org/ntsb/CEN12CA402.md): Schweizer TH55A/269A · Grinnell, IA · Accident · No injuries · Data collection · Final report · Jun 26, 2012 · N488MC · Substantial damage
  > The pilot’s inadequate compensation for the wind during a hovering maneuver, which resulted in a loss of tail rotor effectiveness and directional control.
- [NTSB CHI06LA138](https://openairdocs.org/ntsb/CHI06LA138.md): Hughes 269A · Berlin Center, OH · Accident · 1 fatal · Limited investigation · Final report · May 28, 2006 · N69HU · Substantial damage
  > The pilot flew at a low altitude and failed to maintain clearance from the wire. A factor was the wire.
- [NTSB SEA05CA168](https://openairdocs.org/ntsb/SEA05CA168.md): Hughes 269A · Ashland, OR · Accident · No injuries · Data collection · Final report · Aug 12, 2005 · N488MC · Substantial damage
  > The inability of the dual student to maintain directional control of the helicopter during the landing roll when the left skid sank into an area of thick, soft, sticky tar, and the instructor pilot's improper decision to perform a full-down autorotational…
- [NTSB LAX00TA355](https://openairdocs.org/ntsb/LAX00TA355.md): Hughes TH-55A · Phoenix, AZ · Accident · No injuries · Final report · Sep 29, 2000 · N331SD · Substantial damage
  > the flight instructor's misjudged flare during a simulated autorotation, which led to a hard landing.

## 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.aircraft_model_code IN ('8059503'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=8059503

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