# NTSB investigations: Pratt & Whitney JT9D-3A: 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 MIA96FA013](https://openairdocs.org/ntsb/MIA96FA013.md): Boeing 747-121 · Miami, FL · Accident · No injuries · Field investigation · Final report · Oct 23, 1995 · N613FF · Substantial damage
  > failure of the No. 4 engine fifth stage turbine hub due to a cyclic stress rupture for undetermined reasons, which resulted in an uncontained failure of the engine.
- [NTSB NYC95IA192](https://openairdocs.org/ntsb/NYC95IA192.md): Boeing 747-130 · Jamaica, NY · Incident · No injuries · Incident investigation · Final report · Aug 14, 1995 · N603FF · Minor damage
  > failure and separation of the #1 engine turbine shroud assembly, which resulted in an uncontained engine failure, a puncture of the #2 outboard reserve fuel tank plate, and a fuel leak.
- [NTSB DCA89IA066](https://openairdocs.org/ntsb/DCA89IA066.md): Mcdonnell Douglas DC-10-40 · Denver, CO · Incident · No injuries · Incident investigation · Final report · Aug 10, 1989 · N133JC · Minor damage
  > Fatigue failure and separation of a first-stage compressor fan blade.

## 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 ('52050')
    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=52050&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.