# NTSB investigations: Piper PA-44-180: Aircraft maintenance event

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 ERA14FA168](https://openairdocs.org/ntsb/ERA14FA168.md): Piper PA-44-180 · Brunswick, GA · Accident · 2 fatal · Field investigation · Final report · Mar 24, 2014 · N923RS · Destroyed
  > An inflight failure of the airplane's only operating vacuum pump, which resulted in the loss of attitude information provided by vacuum-driven flight instruments. Also causal was the pilots' failure to maintain control of the airplane while operating in…
- [NTSB ERA12LA494](https://openairdocs.org/ntsb/ERA12LA494.md): Piper PA-44-180 · Titusville, FL · Accident · No injuries · Limited investigation · Final report · Aug 1, 2012 · N740FT · Substantial damage
  > Inadequate maintenance servicing and inspection of the nose landing gear, which resulted in the failure of the nose landing gear to lock and its subsequent collapse during landing.
- [NTSB ERA12LA117](https://openairdocs.org/ntsb/ERA12LA117.md): Piper PA-44-180 · Lawrenceville, GA · Accident · No injuries · Limited investigation · Final report · Dec 19, 2011 · N790GK · Substantial damage
  > The mechanic's improper installation and lubrication of the bushing on the right main landing gear truss assembly, which resulted in the landing gear not locking in the down position.
- [NTSB CHI08LA160](https://openairdocs.org/ntsb/CHI08LA160.md): Piper PA-44-180 · Battle Creek, MI · Accident · No injuries · Limited investigation · Final report · Jun 8, 2008 · N159WM · Substantial damage
  > The in-flight separation of the tip of a propeller blade due to metal fatigue that resulted from an inadequate inspection and repair.

## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('7104402', '7104406')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.case_mkey = x.case_mkey AND s.aircrafts_position = x.position AND s."tier2Number" = '040' 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/040/sequence?model=7104402

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