# NTSB investigations, 2012: AC generator-alternator

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 ERA12LA450](https://openairdocs.org/ntsb/ERA12LA450.md): Beech A36 · Johns Island, SC · Accident · No injuries · Limited investigation · Final report · Jul 9, 2012 · N6672B · Substantial damage
  > The pilot's failure to complete the manual emergency gear extension after a loss of electrical power. Contributing to the accident was the pilot's decision to delegate the landing gear extension to a non-pilot-rated passenger.
- [NTSB CEN12FA251](https://openairdocs.org/ntsb/CEN12FA251.md): Cirrus Design SR22 · Newcomerstown, OH · Accident · 1 fatal · Field investigation · Final report · Apr 21, 2012 · N110EB · Substantial damage
  > The pilot’s loss of airplane control in instrument meteorological conditions due to his distraction by electrical system anomalies, which resulted in an uncontrolled descent. The reason for the electrical system anomalies could not be determined.
- [NTSB CEN12LA220](https://openairdocs.org/ntsb/CEN12LA220.md): Cirrus Design SR22T · Addison, TX · Accident · No injuries · Limited investigation · Final report · Mar 23, 2012 · N229TX · Substantial damage
  > Maintenance personnel’s improper maintenance, which resulted in the incorrect wiring of the No. 1 alternator and a subsequent electrical system fire during taxi. Contributing to the accident was the airplane manufacturer's inadequate maintenance documentation…
- [NTSB WPR12LA097](https://openairdocs.org/ntsb/WPR12LA097.md): Beech 58P · Santa Ana, CA · Accident · No injuries · Limited investigation · Final report · Jan 8, 2012 · N580TC · Substantial damage
  > The pilot’s failure to review or execute any applicable checklist procedures or troubleshoot or take corrective action before landing despite indications that the landing gear was not extended. Contributing to the accident were the pilot’s misunderstanding of…

## 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 year(c."eventDate") = 2012
  AND c."mKey" IN (SELECT f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f."findingCode", '01022421'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-findings/01022421/cases?year=2012

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