# NTSB investigations: Pratt & Whitney JT9D-3A, MN

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 CHI88IA040](https://openairdocs.org/ntsb/CHI88IA040.md): Boeing 747-251F · Minneapolis, MN · Incident · No injuries · Incident investigation · Final report · Jan 9, 1988 · N618US · No damage
  > Aircraft experienced a loss of aileron ctl when ice formed around aileron control cables and restricted their movement. Water draining through open plenum drains in the main landing gear wheel well froze when exposed to below freezing temperatures at 35,000…
- [NTSB CHI84IA196](https://openairdocs.org/ntsb/CHI84IA196.md): McDonnell Douglas DC-10-40 · Minneapolis, MN · Incident · No injuries · Incident investigation · Final report · May 17, 1984 · N150US · Minor damage
  > During climb from FL330 to FL370 the 1st officer saw sparks and smoke coming from the left side panel under his glare shield. Cockpit lights were turned off and smoke stopped. Flt returned to Minneapolis and landed without incident. Inspection of the acft…
- [NTSB CHI82IA015](https://openairdocs.org/ntsb/CHI82IA015.md): Douglas DC-10 · Minneapolis, MN · Incident · No injuries · Closed · Nov 17, 1981 · N156US · Minor damage

## 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" = 'MN' 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 ('52050'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52050&state=MN

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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.