# NTSB investigations, WA: Rotor 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 SEA05FA019](https://openairdocs.org/ntsb/SEA05FA019.md): Robinson R22 Beta · Arlington, WA · Accident · 2 fatal · Field investigation · Final report · Nov 27, 2004 · N4029Q · Destroyed
  > The divergence of the main rotor from its normal plane of rotation for an undetermined reason, resulting in rotor contact with the aircraft's left windscreen. The failure of the door pins to be installed was a factor.
- [NTSB SEA04LA043](https://openairdocs.org/ntsb/SEA04LA043.md): Garlick UH-1H · Liberty, WA · Accident · Serious injuries · Limited investigation · Final report · Feb 23, 2004 · N6257P · Substantial damage
  > The failure of the tail rotor slider lugs due to fatigue while the helicopter was maneuvering.
- [NTSB SEA98LA160](https://openairdocs.org/ntsb/SEA98LA160.md): McDonnell Douglas 369D · Oso, WA · Accident · Minor injuries · Limited investigation · Final report · Aug 10, 1998 · N1096L · Substantial damage
  > The separation of the 90 degree gearbox and tail rotor assembly for undetermined reasons followed by the inability of the pilot-in-command to maintain control of the rotorcraft.
- [NTSB SEA98LA124](https://openairdocs.org/ntsb/SEA98LA124.md): Hiller UH-12E · Eltopia, WA · Accident · Minor injuries · Limited investigation · Final report · Jul 7, 1998 · N5360V · Destroyed
  > Fatigue of the control rotor blade spar and failure of the maintenance inspector to follow the procedures set forth in the airworthiness directive.

## 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."eventStateOrRegion" = 'WA' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o."occurrenceNumber" = 1 AND o."occurrenceCode" = 132)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?occurrence=132&state=WA

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