# NTSB investigations: AiResearch TPE331 series, CA

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 WPR24FA124](https://openairdocs.org/ntsb/WPR24FA124.md): Gulfstream 695A · San Bernardino, CA · Accident · 1 fatal · Class 3 · Field · Final report · Apr 14, 2024 · N965BC · Destroyed
  > The pilot’s continued use of the airplane’s autopilot after flight into moderate to severe icing conditions, which resulted in an exceedance of the airplane’s critical angle of attack and an aerodynamic stall.
- [NTSB WPR24FA123](https://openairdocs.org/ntsb/WPR24FA123.md): Ayres S2R-G10 · Derner, CA · Accident · 1 fatal · Class 3 · Field · Final report · Apr 9, 2024 · N40261 · Substantial damage
  > The pilot’s failure to adequately monitor his fuel supply, resulting in fuel exhaustion, a total loss of engine power, and the airplane’s impact with terrain.
- [NTSB WPR20LA172](https://openairdocs.org/ntsb/WPR20LA172.md): Ayres S2R · Imperial, CA · Accident · No injuries · Class 3 · Limited · Final report · May 9, 2020 · N2245S · Substantial damage
  > The pilot's loss of control during a landing roll due to a failure of the main O-ring in the right brake assembly, which resulted in a loss of brake pressure and subsequent brake failure.
- [NTSB WPR18LA129](https://openairdocs.org/ntsb/WPR18LA129.md): Gulfstream AM Corp Comm Div 695A · Bishop, CA · Accident · No injuries · Class 3 · Limited · Final report · Apr 26, 2018 · N79PH · Substantial damage
  > The failure of the left main landing gear upper arm forging due to fatigue cracking and subsequent overstress, which resulted in the collapse of the landing gear during the landing roll.
- [NTSB GAA17CA333](https://openairdocs.org/ntsb/GAA17CA333.md): Swearingen SA227 TT · Santa Monica, CA · Accident · No injuries · Data collection · Final report · Mar 12, 2017 · N53DA · Substantial damage
  > The pilot’s unstabilized approach after encountering wake turbulence, which resulted in a hard landing.
- [NTSB SEA08CA034](https://openairdocs.org/ntsb/SEA08CA034.md): Ayres S2R-G1 · Calexico, CA · Accident · No injuries · Data collection · Final report · Nov 19, 2007 · N2237D · Substantial damage
  > The pilot's failure to maintain directional control while landing. A factor in the accident was the close proximity of the drainage ditch to the edge of the private airstrip's runway.
- [NTSB LAX05CA059](https://openairdocs.org/ntsb/LAX05CA059.md): Cessna 441 · Thermal, CA · Accident · No injuries · Data collection · Final report · Jan 3, 2005 · N441CX · Substantial damage
  > the pilot's misjudged speed and distance, which resulted in a failure to attain the proper touchdown point and a subsequent overrun of the runway. A factor in the accident was limited braking effectiveness resulting from the wet runway condition.
- [NTSB LAX04FA165](https://openairdocs.org/ntsb/LAX04FA165.md): Mitsubishi MU-2B-40 · Napa, CA · Accident · 2 fatal · Field investigation · Final report · Mar 12, 2004 · N966MA · Destroyed
  > The pilot's failure to maintain control of the airplane following a shutdown of the left engine during a night visual approach. A factor contributing to the accident was the dark night.
- [NTSB LAX02TA267](https://openairdocs.org/ntsb/LAX02TA267.md): Sikorsky S-55T · Lytle Creek, CA · Accident · No injuries · Final report · Aug 30, 2002 · N747A · Substantial damage
  > Failure of the hydraulic system due to contamination in the hydraulic fluid, which resulted in an in-flight loss of control.
- [NTSB LAX96FA228](https://openairdocs.org/ntsb/LAX96FA228.md): British Aerospace BA-3100/3201 · San Luis Obispo, CA · Accident · No injuries · Field investigation · Final report · Jun 6, 1996 · N926AE · Substantial damage
  > The flight crew's loss of directional control resulting from an attempted takeoff with the left propeller on the start lock. Factors in the accident were: the lack of cockpit caution/warning system/lights available to verify that the propellers are out of the…
- [NTSB LAX95FA338](https://openairdocs.org/ntsb/LAX95FA338.md): Swearingen SA-226T · Chino, CA · Accident · Minor injuries · Field investigation · Final report · Sep 18, 1995 · N693PG · Destroyed
  > The pilot's improper IFR procedure by not initiating a missed approach at the outer marker, by attempting to intercept the glideslope from above after passing the outer marker, and by allowing the airplane to continue descending after reaching the decision…
- [NTSB LAX95LA269](https://openairdocs.org/ntsb/LAX95LA269.md): Rockwell S-2R · Tulare, CA · Accident · 1 fatal · Limited investigation · Final report · Jul 26, 1995 · N5035X · Destroyed
  > failure of the pilot to see and avoid power lines along his route of flight.
- [NTSB LAX95IA027](https://openairdocs.org/ntsb/LAX95IA027.md): Fairchild SA-227AC · Oakland, CA · Incident · No injuries · Incident investigation · Final report · Oct 29, 1994 · N191AF · No damage
  > the company maintenance personnel's improper installation of the aileron cable.
- [NTSB LAX93FA333](https://openairdocs.org/ntsb/LAX93FA333.md): Aero Commander 690A · Bishop, CA · Accident · No injuries · Field investigation · Final report · Aug 26, 1993 · N706KC · Substantial damage
  > a loss of control and upset due to an inadequate adjustment of the ailerons and aileron trim tab by company maintenance personnel that resulted in a partial failure of the right horizontal stabilizer.
- [NTSB LAX92TL#06](https://openairdocs.org/ntsb/LAX92TL%2306.md): Mitsubishi MU2B-36 · Edwards Afb, CA · Accident · No injuries · Class 3 · Final report · May 18, 1992 · N742FN · Substantial damage
- [NTSB LAX92LA131](https://openairdocs.org/ntsb/LAX92LA131.md): Grumman G-164A · Vernalis, CA · Accident · No injuries · Limited investigation · Final report · Feb 29, 1992 · N5408 · Substantial damage
  > The operator's failure to properly comply with an airworthiness directive affecting the second-stage turbine wheel assembly. Contributing to this accident was the uncontained failure of the second-stage turbine wheel and the rough/uneven terrain.
- [NTSB LAX82FA255](https://openairdocs.org/ntsb/LAX82FA255.md): Mitsubishi MU-2B · Schellville, CA · Accident · Minor injuries · Field investigation · Final report · Jul 14, 1982 · N27GP · Destroyed
  > At approximately 800 ft down the left side of the rwy the left eng experienced a power loss. The acft swerved off the left side of the rwy colliding with a drainage ditch & coming to rest inverted. Examination of the fuel control unit revealed that the…
- [NTSB LAX80FA005](https://openairdocs.org/ntsb/LAX80FA005.md): Swearingen SA26AT · Palo Alto, CA · Accident · 2 fatal · Closed · Oct 19, 1979 · N65103 · 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" = 'CA' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('01514', '01517'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=01514&state=CA

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OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.