# NTSB investigations: Piper PA-31-350, CO

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 DEN08LA012](https://openairdocs.org/ntsb/DEN08LA012.md): Piper PA-31-350 · Trinidad, CO · Accident · No injuries · Limited investigation · Final report · Oct 9, 2007 · N313RA · Substantial damage
  > The pilot's failure to extend the landing gear.
- [NTSB DEN01FA161](https://openairdocs.org/ntsb/DEN01FA161.md): Piper PA-31-350 · Pagosa Springs, CO · Accident · 2 fatal · Field investigation · Final report · Sep 24, 2001 · N161RB · Destroyed
  > the flight crews' intentional low altitude flight, and failure to maintain obstacle clearance.
- [NTSB DEN01LA132](https://openairdocs.org/ntsb/DEN01LA132.md): Piper PA-31-350 · Grand Junction, CO · Accident · No injuries · Limited investigation · Final report · Jul 29, 2001 · N114SA · Substantial damage
  > the failure of the nose landing gear right drag brace (link assembly) due to fatigue.
- [NTSB DEN01LA005](https://openairdocs.org/ntsb/DEN01LA005.md): Piper PA-31-350 · Grand Junction, CO · Accident · No injuries · Limited investigation · Final report · Sep 27, 2000 · N159SW · Substantial damage
  > Total failure of the right forward inboard landing gear door hinge pin for undetermined reasons.
- [NTSB DEN00FA102](https://openairdocs.org/ntsb/DEN00FA102.md): Piper PA-31-350 · Kiowa, CO · Accident · 2 fatal · Field investigation · Final report · Jun 5, 2000 · N67BJ · Destroyed
  > the flight instructor's failure to maintain aircraft control while practicing stall maneuvers, which resulted in an inadvertent spin.
- [NTSB DEN99FA016](https://openairdocs.org/ntsb/DEN99FA016.md): Piper PA-31-350 · Hayden, CO · Accident · 1 fatal · Field investigation · Final report · Oct 28, 1998 · N35533 · Destroyed
  > The pilot not following instrument procedures and subsequently descended to minimums prematurely. Factors were the mountainous terrain and the falling snow.
- [NTSB FTW98IA361](https://openairdocs.org/ntsb/FTW98IA361.md): Piper PA-31-350 · Denver, CO · Incident · No injuries · Incident investigation · Final report · Aug 18, 1998 · N66906 · Minor damage
  > A hydraulic failure due to a ruptured hydraulic line, preventing the extension of the nose and right main landing gear.
- [NTSB FTW97LA267](https://openairdocs.org/ntsb/FTW97LA267.md): Piper PA-31-350 · Denver, CO · Accident · No injuries · Limited investigation · Final report · Jul 15, 1997 · N800SA · Substantial damage
  > inadequate visual lookout by the bus driver. Factors relating to the accident were: darkness and bright background lighting.
- [NTSB FTW97LA206](https://openairdocs.org/ntsb/FTW97LA206.md): Piper PA-31-350 · Greeley, CO · Accident · No injuries · Limited investigation · Final report · May 28, 1997 · N491SC · Substantial damage
  > unlatching of the left outboard engine cowling latches for undetermined reason(s), which allowed the left engine cowling to separate inflight and strike the vertical stabilizer.
- [NTSB DEN92LA012](https://openairdocs.org/ntsb/DEN92LA012.md): Piper PA-31-350 · Denver, CO · Accident · No injuries · Limited investigation · Final report · Nov 29, 1991 · N354AC · Substantial damage
  > A false unsafe landing gear indication due to a frozen down lock switch. Factors were: icing conditions and low ceilings.
- [NTSB DEN90FA066](https://openairdocs.org/ntsb/DEN90FA066.md): Piper PA-31-350 · Greeley, CO · Accident · Serious injuries · Field investigation · Final report · Feb 21, 1990 · N3554P · Destroyed
  > The improper identification of parts in the Piper PA-31-350 service manual pertaining to the aileron cables. This discrepancy resulted in the improper installation of the aileron cables on the right aileron bellcrank by a mechanic during the reconstruction of…
- [NTSB DCA82AA007](https://openairdocs.org/ntsb/DCA82AA007.md): Piper PA-31 · Durango, CO · Accident · 4 fatal · Closed · Dec 31, 1981 · N41070 · Destroyed

## 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" = 'CO' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('7103110', '7103125'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=7103110&state=CO

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