# NTSB investigations, 2021: 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 CEN22LA072](https://openairdocs.org/ntsb/CEN22LA072.md): American Legend AL18 · Abbeville, LA · Accident · No injuries · Class 4 · Limited · Final report · Dec 12, 2021 · N1477D · Destroyed
  > An electrical fire for reasons that could not be determined.
- [NTSB WPR22LA063](https://openairdocs.org/ntsb/WPR22LA063.md): Beech 200 · Eugene, OR · Accident · No injuries · Class 4 · Limited · Final report · Nov 28, 2021 · N71VT · Substantial damage
  > The pilot’s improper checklist use, which resulted in an electrical malfunction and subsequent gear up landing.
- [NTSB WPR21LA348](https://openairdocs.org/ntsb/WPR21LA348.md): Cessna 172N · Grass Valley, CA · Accident · No injuries · Class 4 · Limited · Final report · Sep 19, 2021 · N4977G · Substantial damage
  > The pilot’s failure to attain a proper touchdown point on the runway while landing in gusting wind conditions, which resulted in a runway overrun. Contributing to the accident was the pilot’s distraction due to an electrical issue.
- [NTSB GAA21WA205](https://openairdocs.org/ntsb/GAA21WA205.md): Beech 95 55 · Churchdown, United Kingdom · Accident · No injuries · Class 5 · Foreign · Aug 13, 2021 · 2-NOVA · Substantial damage
- [NTSB WPR21LA294](https://openairdocs.org/ntsb/WPR21LA294.md): Kuykendall Charles Lancair IV · Indian Springs, NV · Accident · No injuries · Class 3 · Limited · Final report · Jul 28, 2021 · N26PD · Destroyed
  > An in-flight fire due to an undetermined electrical malfunction.
- [NTSB GAA21WA188](https://openairdocs.org/ntsb/GAA21WA188.md): MD Helicopter MD900 · London, United Kingdom · Incident · No injuries · Class 5 · Foreign · Jul 25, 2021 · G-LNDN · No damage
- [NTSB CEN21LA373](https://openairdocs.org/ntsb/CEN21LA373.md): Mooney M20F · New Albany, MS · Accident · No injuries · Class 4 · Limited · Final report · Jul 22, 2021 · N6474Q · Substantial damage
  > The pilot’s delayed decision to abort the landing that resulted in a collision with a fence post. Contributing to the accident was the failure of the alternator drive belt during cruise flight for unknown reasons and the subsequent inoperative electrical…
- [NTSB GAA21WA193](https://openairdocs.org/ntsb/GAA21WA193.md): Sikorsky S92 · South Havra, United Kingdom · Accident · Class 5 · Foreign · Jul 15, 2021 · G-MCGI
- [NTSB WPR21LA269](https://openairdocs.org/ntsb/WPR21LA269.md): Cessna 172R · Petaluma, CA · Accident · No injuries · Class 4 · Limited · Final report · Jul 10, 2021 · N996RA · Substantial damage
  > The pilot’s improper landing flare which resulted in a hard landing following a partial loss of electrical power. Contributing to the accident was the pilot’s distraction and hampered visual function.
- [NTSB GAA21WA079](https://openairdocs.org/ntsb/GAA21WA079.md): Piper PA28 · Roskilde, Denmark · Accident · No injuries · Class 5 · Foreign · Apr 8, 2021 · OY-JEC · Minor damage
- [NTSB ENG21WA019](https://openairdocs.org/ntsb/ENG21WA019.md): Boeing 747 · Dubai, United Arab Emirates · Incident · Class 5 · Foreign · Mar 22, 2021 · LX-VCD · Minor damage
- [NTSB ERA21LA159](https://openairdocs.org/ntsb/ERA21LA159.md): Cessna 210 · Marianna, FL · Accident · No injuries · Class 4 · Limited · Final report · Mar 18, 2021 · N7736K · Substantial damage
  > The failure of the alternator control unit housing plug connection, which resulted in insufficient battery power to fully extend the landing gear. Contributing to the accident was the pilot’s decision to not use the emergency gear extension handle to secure…

## 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") = 2021
  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=2021

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