# NTSB investigations: AiResearch TPE331 series: Loss of engine power(total) - mech failure/malf

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 FTW01FA111](https://openairdocs.org/ntsb/FTW01FA111.md): Mitsubishi MU-2B-40 · The Woodlands, TX · Accident · 2 fatal · Field investigation · Final report · May 1, 2001 · N16CG · Destroyed
  > The pilot's failure to maintain airplane control following a loss of right engine power, which resulted in impact with terrain in an uncontrolled descent. A contributing factor was the loss of right engine power as a result of the fatigue failure of the…
- [NTSB NYC00IA159](https://openairdocs.org/ntsb/NYC00IA159.md): British Aerospace BAE Jetstream 3201 · Lexington, KY · Incident · No injuries · Incident investigation · Final report · Jun 9, 2000 · N914AE · Minor damage
  > A misalignment between the bull gear and high speed pinion gearshaft, which resulted in fatigue and a subsequent failure of the bull gear.
- [NTSB FTW00LA118](https://openairdocs.org/ntsb/FTW00LA118.md): Ayres S2R-G6 · Oak Grove, LA · Accident · No injuries · Limited investigation · Final report · Apr 6, 2000 · N3004V · Substantial damage
  > The failure of a spur gear from the torque sensor gear assembly resulting in a loss of engine power. A factor was the muddy terrain encountered during the forced landing.
- [NTSB LAX98IA218](https://openairdocs.org/ntsb/LAX98IA218.md): Aero Commander 681B · Reno, NV · Incident · No injuries · Incident investigation · Final report · Jun 29, 1998 · N520CS · Minor damage
  > The failure and separation of the first and third stage turbine disks for undetermined reasons.
- [NTSB FTW97LA170](https://openairdocs.org/ntsb/FTW97LA170.md): Ayres S2R-G6 · El Dorado, AR · Accident · No injuries · Limited investigation · Final report · Apr 29, 1997 · N31575 · Substantial damage
  > The pilot misjudging his altitude above the airport, resulting in not attaining the proper touchdown point. A factor was the separation of teeth from the aft gear of the spur gear assembly, which resulted in the interruption of fuel.
- [NTSB FTW96IA248](https://openairdocs.org/ntsb/FTW96IA248.md): Fairchild SA227-DC · Enid, OK · Incident · No injuries · Incident investigation · Final report · Jun 11, 1996 · N850LS · No damage
  > failure of the accessory drive bearing, causing the accessory drive gear teeth to shear and disengage the fuel pump accessory drive shaft, resulting in a disabled fuel pump and subsequent fuel starvation.
- [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 MKC83IA078](https://openairdocs.org/ntsb/MKC83IA078.md): Aero Commander 680W · Kansas City, KS · Incident · No injuries · Incident investigation · Final report · Mar 16, 1983 · N200DT · Minor damage
  > The number 2 engine failed in cruise flight. Durng descent the landing gear failed to extend. The pilot landed intentional gear up in the sod area adjacent to the runway.

## 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.engine_model_code IN ('01514', '01517')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 351))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=01514&occurrence=351

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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.