# NTSB investigations, 2012: 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 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 WPR12LA402](https://openairdocs.org/ntsb/WPR12LA402.md): Hansen HANSEN-VANS RV-6 · Lemolo Lake, OR · Accident · Serious injuries · Limited investigation · Final report · Sep 5, 2012 · N53MH · Substantial damage
  > An overvoltage event due to the failure of the automotive voltage regulator, which resulted in electrical anomalies and smoke in the cockpit and a subsequent forced off-airport landing.
- [NTSB CEN12TA604](https://openairdocs.org/ntsb/CEN12TA604.md): Cessna 182P · Newberry, MI · Accident · Serious injuries · Final report · Sep 2, 2012 · N5981J · Substantial damage
  > The pilot’s failure to maintain control of the airplane due to distraction from a combination of smoke in the cockpit and a sudden turbulence encounter while on short final approach. The cause of the cockpit smoke could not be determined due to the extensive…
- [NTSB DCA12WA127](https://openairdocs.org/ntsb/DCA12WA127.md): Boeing 747-400 · London, United Kingdom · Incident · No injuries · Foreign investigation · Aug 17, 2012 · 9M-MPL · No damage
  > The United Kingdom's Air Accidents Investigations Branch (AAIB), has notified the NTSB of an accident involving a Boeing 747-400 that occurred on August 17, 2012. The NTSB has appointed a U.S. Accredited Representative to assist the AAIB investigation under…
- [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 CEN12LA389](https://openairdocs.org/ntsb/CEN12LA389.md): Hoyle Fighter Escort Wings · Pueblo, CO · Accident · No injuries · Limited investigation · Final report · Jun 23, 2012 · N2051P · Substantial damage
  > An internal failure of one of the electrical system’s two batteries combined with the inadequate electrical system design, which resulted in a total loss of engine power.
- [NTSB ERA12FA280](https://openairdocs.org/ntsb/ERA12FA280.md): Manzitto Michael A Mwlancair 235 · Hudson, KY · Accident · 1 fatal · Field investigation · Final report · Apr 14, 2012 · N235MW · Substantial damage
  > The pilot's decision to operate the airplane with known electrical system problems, which resulted in the in-flight failure of the electrical wiring interconnect system, loss of electrical power, and subsequent fuel starvation and loss of engine power.
- [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 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?year=2012

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