# NTSB investigations: Schweizer 269C: Airframe/component/system failure/malfunction

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 CHI06TA033](https://openairdocs.org/ntsb/CHI06TA033.md): Schweizer 269C · Manhattan, KS · Accident · No injuries · Final report · Nov 18, 2005 · N400PD · Substantial damage
  > The binding of the main rotor blade's tachometer cable during cruise flight resulting in an observed split tachometer indication/aural alarm and perceived mechanical emergency and the unsuitable terrain the pilot encountered during the emergency landing. A…
- [NTSB IAD05LA046](https://openairdocs.org/ntsb/IAD05LA046.md): Schweizer 269C · Leet, WV · Accident · Serious injuries · Limited investigation · Final report · Mar 19, 2005 · N61193 · Substantial damage
  > A fatigue fracture of the main transmission drive pinion. Also causal was the manufacturer's failure to remove the affected pinions from service during the period that transpired between the initial failures and the accident flight.
- [NTSB DEN02LA098](https://openairdocs.org/ntsb/DEN02LA098.md): Schweizer 269C · Broomfield, CO · Accident · No injuries · Limited investigation · Final report · Aug 20, 2002 · N7508L · Substantial damage
  > maintenance personnel's failure to secure the landing skid oleo strut bolt during the last 50-hour inspection, causing the left rear skid to collapse and the tail rotor to strike the ground.
- [NTSB FTW00LA216](https://openairdocs.org/ntsb/FTW00LA216.md): Schweizer 269C · Sherman, TX · Accident · Minor injuries · Limited investigation · Final report · Jul 25, 2000 · N298SH · Substantial damage
  > the total failure of the clutch cable during landing, which resulted from fatigue cracking of the cable's individual wires.
- [NTSB FTW96LA095](https://openairdocs.org/ntsb/FTW96LA095.md): Schweizer 269C · San Ygnacio, TX · Accident · No injuries · Limited investigation · Final report · Jan 12, 1996 · N3623T · Substantial damage
  > Failure of the rotor drive system clutch assembly (separation of the swedge ball from the end of the clutch control cable), which resulted in disengagement of the rotor drive system, while the helicopter was in lateral movement at low altitude.
- [NTSB CHI93GA046](https://openairdocs.org/ntsb/CHI93GA046.md): Schweizer 269C · Kansas City, MO · Accident · 2 fatal · Final report · Dec 2, 1992 · N640KC · Destroyed
  > The pilot-in-command's misjudging the distance during the autorotation.

## 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 ('8059502')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 130))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=8059502&occurrence=130

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