# NTSB investigations, AZ: Electrical system malf/failure

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 WPR17FA155](https://openairdocs.org/ntsb/WPR17FA155.md): Evolution 19 Lancair Evolution · Mesa, AZ · Accident · 2 fatal · Field investigation · Final report · Jul 17, 2017 · N571JM · Substantial damage
  > The pilot's failure to maintain adequate airspeed while maneuvering for landing, which resulted in an exceedance of the airplane's critical angle of attack and a subsequent stall/spin. Contributing to the accident was the pilot's distraction due to a failure…
- [NTSB WPR13LA237](https://openairdocs.org/ntsb/WPR13LA237.md): Piper PA-32R-301T · Chandler, AZ · Accident · No injuries · Limited investigation · Final report · May 19, 2013 · N8197W · Substantial damage
  > The failure of the alternator and/or battery, which prevented the operation of the landing gear extension system and resulted in the nose landing gear collapsing during the landing roll.
- [NTSB WPR13LA060](https://openairdocs.org/ntsb/WPR13LA060.md): Piper PA30 · Phoenix, AZ · Accident · No injuries · Limited investigation · Final report · Nov 24, 2012 · N8747Y · Substantial damage
  > The pilot's failure to properly inhibit the landing gear transmission motor consistent with the emergency landing gear extension procedure, which precluded the full extension of the landing gear. Contributing to the accident was the airplane's electrical…
- [NTSB WPR10CA215](https://openairdocs.org/ntsb/WPR10CA215.md): PZL-Swidnik PW-5 · Marana, AZ · Accident · No injuries · Data collection · Final report · Apr 26, 2010 · N500JN · Substantial damage
  > The pilot's inability to find thermal lift. Contributing to the accident was the failure of a computer that provided glide information and vertical speed instrumentation as a result of an improperly routed electrical cable that caused a short in the…

## 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" = '332' 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/332/sequence?state=AZ

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.