# NTSB investigations, AZ: Inflight upset

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 WPR19TA037](https://openairdocs.org/ntsb/WPR19TA037.md): Scottish Series 100 MDL 101 · Lake Pleasant, AZ · Accident · Minor injuries · Class 3 · Final report · Nov 17, 2018 · N82696 · Substantial damage
  > Impact with a lake for undetermined reasons.
- [NTSB WPR18LA197](https://openairdocs.org/ntsb/WPR18LA197.md): Beech 90 · Tolani Lake, AZ · Accident · No injuries · Class 3 · Limited · Final report · Jul 12, 2018 · N617MM · Substantial damage
  > An autopilot deviation during climb for undetermined reasons, which resulted in an in-flight upset and loss of airplane control. Contributing to the accident was the pilot’s failure to adequately monitor flight systems due to a distraction.
- [NTSB WPR10FA133](https://openairdocs.org/ntsb/WPR10FA133.md): Eurocopter EC135 · Cave Creek, AZ · Accident · 5 fatal · Field investigation · Final report · Feb 14, 2010 · N127TS · Substantial damage
  > The sudden and inadvertent lowering of the collective to near the lower stop, followed by a simultaneous movement of the collective back up and the cyclic control to a nearly full-aft position, which resulted in the main rotor disc diverging from its normal…

## 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" = 'AZ' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '271' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent"))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/271/sequence?state=AZ

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