# NTSB investigations: Lycoming T-53 series, OR

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 WPR23LA097](https://openairdocs.org/ntsb/WPR23LA097.md): Kaman Aerospace K-1200 · Sweet Home, OR · Accident · No injuries · Class 3 · Limited · Final report · Jan 24, 2023 · N202WM · Substantial damage
  > Improper installation of the hardware retaining the adjustment screw in the N2 topping governor lever and roller assembly, which resulted in a partial loss of engine power.
- [NTSB SEA98LA017](https://openairdocs.org/ntsb/SEA98LA017.md): Bell TH-1L · Canby, OR · Accident · Minor injuries · Limited investigation · Final report · Nov 25, 1997 · N8160G · Substantial damage
  > The pilot's allowance of excessive airspeed resulting in the long-line hook impacting the tail rotor, and his allowance of an airspeed bleed-off preventing a successful run-on landing due to a loss of yaw control.
- [NTSB SEA97LA198](https://openairdocs.org/ntsb/SEA97LA198.md): Garlick UH-1B · Dayville, OR · Accident · Serious injuries · Limited investigation · Final report · Aug 29, 1997 · N22753 · Substantial damage
  > Improper installation of the transmission door by a company mechanic, resulting in inflight separation of the door (which then struck the tail rotor system) and consequent total loss of the tail rotor. Contributing to the accident were: inadequate…
- [NTSB SEA97TA012](https://openairdocs.org/ntsb/SEA97TA012.md): Garlick UH-1H · Detroit, OR · Accident · Minor injuries · Final report · Oct 20, 1996 · N98NW · Substantial damage
  > the pilot's misjudgement of rotor clearance from the terrain. The proximity of the berm was a related factor.

## 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" = 'OR' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41552', '41549', '41587'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41552&state=OR

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